function onlyINT(objEvent) 
     {
       var inputChar;       
       inputChar = objEvent.keyCode;               
       if(inputChar>=48 && inputChar<=57) return true;
       return false;
     }


function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		Des1_Des9_over = newImage("images/Des1-Des9_over.gif");
		Des2_Des10_over = newImage("images/Des2-Des10_over.gif");
		Des3_Des11_over = newImage("images/Des3-Des11_over.gif");
		Des4_Des12_over = newImage("images/Des4-Des12_over.gif");
		Des5_Des13_over = newImage("images/Des5-Des13_over.gif");
		Des6_Des14_over = newImage("images/Des6-Des14_over.gif");
		Des7_Des15_over = newImage("images/Des7-Des15_over.gif");
		Des9_over = newImage("images/Des9-over.gif");
		Des10_over = newImage("images/Des10-over.gif");
		Des11_over = newImage("images/Des11-over.gif");
		Des12_over = newImage("images/Des12-over.gif");
		Des13_over = newImage("images/Des13-over.gif");
		Des14_over = newImage("images/Des14-over.gif");
		Des15_over = newImage("images/Des15-over.gif");
		preloadFlag = true;
	}
}