function equaliser()
{
	var div1 = document.getElementById("columnnav");
	var div2 = document.getElementById("columnmain");
	
	height1 = div1.offsetHeight;
	height2 = div2.offsetHeight;
	
	if(height1 > height2){
		div2.style.height = height1+"px";
	}
	/*else{
		div1.style.height = height2+"px";
	}*/
}