document.onmouseover = mo;
document.onmouseout = mu;


function mo()
{
	if(window.event.srcElement.id == "a1")
	{
		td1.background="/images/circle1.1.jpg"
	}
	if(window.event.srcElement.id == "a2")
	{
		td2.background="/images/circle2.1.jpg"
	}
	if(window.event.srcElement.id == "a3")
	{
		td3.background="/images/circle3.1.jpg"
	}
}

function mu()
{
	if(window.event.srcElement.id == "a1")
	{
		td1.background="/images/circle1.jpg"
	}

	if(window.event.srcElement.id == "a2")
	{
		td2.background="/images/circle2.jpg"
	}

	if(window.event.srcElement.id == "a3")
	{
		td3.background="/images/circle3.jpg"
	}
	

}



var myimages = new Array();
function preloading(){
for (x=0; x<preloading.arguments.length; x++){
myimages[x] = new Image();
myimages[x].src = preloading.arguments[x];
}
}
preloading("circle_green1.jpg","circle_green2.jpg","circle1.1.jpg", "circle2.1.jpg", "circle3.1.jpg");