function equaliser(){
	try {
		var div1 = document.getElementById("content");
		var div2 = document.getElementById("nav_column");
	
		height1 = div1.offsetHeight;
		height2 = div2.offsetHeight;
		
		if(height1 < height2){
			div1.style.height = height2+22+"px";
		}
	}
	catch(exception){
		// so wont display js error if divs dont exist
	}
}