function media_toggle(div)
			{
			if (document.getElementById('one'))
			{
			var option=['one','two','three','four'];
			for(var i=0; i<option.length; i++)
			{ obj=document.getElementById(option[i]);
			obj.style.display=(option[i]==div)? "block" : "none"; }
			}
			}
			//
	
			window.onload=function(){media_toggle('one');
}
function toggleLayer( whichLayer )
			{
			  var elem, vis;
			  if( document.getElementById ) // this is the way the standards work
				elem = document.getElementById( whichLayer );
			  else if( document.all ) // this is the way old msie versions work
				  elem = document.all[whichLayer];
			  else if( document.layers ) // this is the way nn4 works
				elem = document.layers[whichLayer];
			  vis = elem.style;
			  // if the style.display value is blank we try to figure it out here
			  if(vis.display==''&&elem.offsetWidth!=undefined&&elem.offsetHeight!=undefined)
				vis.display = (elem.offsetWidth!=0&&elem.offsetHeight!=0)?'block':'none';
			  vis.display = (vis.display==''||vis.display=='block')?'none':'block';
}		
function popUp(URL) {
			day = new Date();
			id = day.getTime();
			eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=425,height=350,left = 507.5,top = 275');");
}