if (document.images) {

   a1= new Image();
   a1.src = "images/button1_over.gif";
      a2= new Image();
      a2.src = "images/button2_over.gif";
	  a3= new Image();
	     a3.src = "images/button3_over.gif";
		    a4= new Image();
		    a4.src = "images/button4_over.gif";
			   a5= new Image();
			   a5.src = "images/button5_over.gif";
			      a6= new Image();
			      a6.src = "images/button6_over.gif";
				     a7= new Image();
				     a7.src = "images/button7_over.gif";
					    a8= new Image();
					    a8.src = "images/button8_over.gif";
   s1= new Image();
   s1.src = "images/button31_over.gif";
   s2= new Image();
   s2.src = "images/button32_over.gif";
   s3= new Image();
   s3.src = "images/button33_over.gif";
   s4= new Image();
   s4.src = "images/button34_over.gif";
   s5= new Image();
   s5.src = "images/button35_over.gif";

   s6= new Image();
   s6.src = "images/button31.gif";
   s7= new Image();
   s7.src = "images/button32.gif";
   s8= new Image();
   s8.src = "images/button33.gif";
   s9= new Image();
   s9.src = "images/button34.gif";
   s10= new Image();
   s10.src = "images/button35.gif";


}
preloadFlag=1;
nb='_over';

    function hide(){
     document.getElementById('m1').style.visibility='hidden';
    }

	     function show() {
	x=document.getElementById('table').offsetLeft+document.getElementById('td').offsetLeft+document.getElementById('table1').offsetLeft+document.getElementById('td1').offsetLeft+document.getElementById('table2').offsetLeft+document.getElementById('td2').offsetLeft;


	document.getElementById('m1').style.visibility='visible';
	document.getElementById('m1').style.left=x;
     }

function on(button) {
		if(preloadFlag==1 & button.src.indexOf('_active')<=0){
		x = button.src;
		y = x.substring(0,x.length-4);
		ext = x.substring(x.length-4,x.length);
		act=y+nb+ext;
		button.src=act;
		 }
}

function off(button) {
		x = button.src;
		ext = x.substring(x.length-4,x.length);
		tocut = x.length-(nb.length+ext.length);
		if (x.indexOf(nb)>0) {
		  y = x.substring(0,tocut);
		  act = y+ext;
		  button.src=act;
		 }
}