function xhtmlHeight()
	{
		var top=document.getElementById("top").offsetTop;
		var bottom=document.getElementById("bottom").offsetTop;
		var height=bottom-top;
		
		var top1=document.getElementById("top1").offsetTop;
		var bottom1=document.getElementById("bottom1").offsetTop;
		var height1=bottom1-top1;
		
		if(height1<212)
		{
			document.getElementById("height4").style.height=212+'px';
			document.getElementById("height5").style.height=212+'px';
			document.getElementById("height6").style.height=212+'px';
		}
			
		if(height<500)
			height=500;
		
		document.getElementById("height1").style.height=height+'px';
		document.getElementById("height2").style.height=height+'px';
		document.getElementById("height3").style.height=height+'px';
		
		document.getElementById("height4").style.height=height1+'px';
		document.getElementById("height5").style.height=height1+'px';
		document.getElementById("height6").style.height=height1+'px';
		document.getElementById("height7").style.height=height1+'px';
		
		

}