var tabCellId;
var tabClassName;

function changeborder(cell) {

	tabCellId = cell.id;

	switch (tabCellId) {
		case "a1" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}
		case "a2" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}
		case "a3" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}
		case "a4" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}
		case "a5" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}
		case "a6" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}			
		case "a7" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}
		case "a8" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}			

		case "b1" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}
		case "b2" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}
		case "b3" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}
		case "b4" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}
		case "b5" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}
		case "b6" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}			
		case "b7" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}
		case "b8" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}			
			
		case "c1" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}
		case "c2" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}
		case "c3" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}
		case "c4" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}
		case "c5" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}
		case "c6" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}			
		case "c7" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}
		case "c8" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}			

		case "d1" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}
		case "d2" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}
		case "d3" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}
		case "d4" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}
		case "d5" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}
		case "d6" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}			
		case "d7" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}
		case "d8" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}

		case "celle1" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}
		case "celle2" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}
		case "celle3" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}
		case "celle4" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}
		case "celle5" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}
		case "celle6" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}			
		case "celle7" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}
		case "celle8" :
			tabClassName = document.getElementById(tabCellId).className;
			switch (tabClassName) {
				case "white" :
					tabClassName = 'black';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = true;
					break;
				case "black" :
					tabClassName = 'white';
					document.getElementById(tabCellId).getElementsByTagName('input')[0].checked = false;
					break;
				default :
					break;
			}
			
		default :
			break;

	}

	cell.className = tabClassName;

}