function getWinH(){
	var winH=0;
	if(typeof(window.innerHeight)=='number'){
		winH=window.innerHeight;
	}else{
		if(document.documentElement && document.documentElement.clientHeight){
			winH=document.documentElement.clientHeight;
		}else{
			if(document.body && document.body.clientHeight) winH=document.body.clientHeight;
		}
	}
	return winH;
}
function findPosY(obj){
	var cT=0;
	if(obj.offsetParent){
		while(obj.offsetParent){
			cT+=obj.offsetTop;
			obj=obj.offsetParent;
		}
	}else if(obj.y){
		cT+=obj.y;
	}
	return cT;
}
function setHeight(){
	if(document.getElementById){
		if(document.getElementById('content') && document.getElementById('left') && document.getElementById('right')){
			var winH=getWinH();
			if(winH>0){				
				var elmCon=document.getElementById('content');
				var elmLeft=document.getElementById('left');
				var elmRight=document.getElementById('right');

				//elmCon.style.height="";
				//elmLeft.style.height="";
				//elmRight.style.height="";

				var intLeftEnd=elmLeft.offsetHeight+findPosY(elmLeft);
				var intRightEnd=elmRight.offsetHeight+findPosY(elmRight);
				var intConEnd=elmCon.offsetHeight+findPosY(elmCon);
				var intWinH=getWinH();
				var intNewPageHeight=intWinH-findPosY(elmLeft);
				
				if(intLeftEnd>=intConEnd && intLeftEnd>=intRightEnd) {
					intNewPageHeight=intLeftEnd;
				} else if(intConEnd>=intLeftEnd && intConEnd>=intRightEnd) {
					intNewPageHeight=intConEnd;
				} else {
					intNewPageHeight=intRightEnd;
				}
				intNewPageHeight-=findPosY(elmLeft);
				//alert(intNewPageHeight);
				
				if(intNewPageHeight<=intWinH-findPosY(elmLeft)) {
					//alert ("vindue større");
					intNewPageHeight=intWinH-findPosY(elmLeft);
				}
				//alert(intNewPageHeight);
				//intPageEnd=(intConEnd>=intLeftEnd) ? intConEnd : intLeftEnd;
				
				elmCon.style.height=intNewPageHeight + "px";
				elmLeft.style.height=intNewPageHeight + "px";
				elmRight.style.height=intNewPageHeight + "px";
			}
		}
	}else if(document.all){

	}
}
window.onload=function(){
	setHeight();
}
window.onresize=function(){
	setHeight();
}