function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function change_vis (id)
{
	var elementid=document.getElementById(id);

	if (elementid.style.visibility == "hidden"){
		elementid.style.display='inline';
		elementid.style.visibility ="visible";
	}
	else {
		elementid.style.visibility ="hidden";
		elementid.style.display='none';
		
	}

}

var browser=navigator.userAgent;

function zoom(id,xpos)
{
	if(document.layers)
	{
		availWidth=window.innerWidth;
		availHeight=window.innerHeight;
	}
	else if(((!document.all)&&(document.getElementById)) || navigator.userAgent.indexOf("Opera") != -1)
	{
		availWidth=window.innerWidth;
		availHeight=window.innerHeight;
	}
	else if(document.all)
	{
		availWidth=document.body.clientWidth;
		availHeight=document.body.clientHeight;
	}
	else
	{
		availWidth=500;
	}
	my_zoom=document.getElementById(id);
	center_pos=(availWidth/2)-(960/2);
	object_pos=center_pos+xpos;
	// my_zoom.style.top=10;
	my_zoom.style.left=object_pos;
	change_vis(id);
}