function over1(tdobj) {
			tdobj.background = "images/btr1.gif";
			}
		function over2(tdobj) {
			tdobj.background = "images/btr2.gif";
			}
		function over3(tdobj) {
			tdobj.background = "images/btr3.gif";
			}
		function over4(tdobj) {
			tdobj.background = "images/btr4.gif";
			}
		function over5(tdobj) {
			tdobj.background = "images/btr5.gif";
			}
		function over6(tdobj) {
			tdobj.background = "images/btr6.gif";
			}	
			
		function out1(tdobj) {
			tdobj.background = "images/bt1.gif";
			}
		function out2(tdobj) {
			tdobj.background = "images/bt2.gif";
			}
		function out3(tdobj) {
			tdobj.background = "images/bt3.gif";
			}
		function out4(tdobj) {
			tdobj.background = "images/bt4.gif";
			}
		function out5(tdobj) {
			tdobj.background = "images/bt5.gif";
			}
		function out6(tdobj) {
			tdobj.background = "images/bt6.gif";
			}