function ContentHeight(){
	var mC = new Array();
	var lC = new Array();
	mC = document.getElementsByClassName('mainContent_subpage');
	lC = document.getElementsByClassName('sidebar_subpage');
	if(mC.length > 0){
		var cHeight = mC[0].offsetHeight;
		var lHeight = lC[0].offsetHeight;
		if(lHeight > cHeight){
			mC[0].style.height = (lHeight - 12) + "px";
		}
	}
}

onload=function(){
if (document.getElementsByClassName == undefined) {
	document.getElementsByClassName = function(className)
	{
		var hasClassName = new RegExp("(?:^|\\s)" + className + "(?:$|\\s)");
		var allElements = document.getElementsByTagName("*");
		var results = [];

		var element;
		for (var i = 0; (element = allElements[i]) != null; i++) {
			var elementClass = element.className;
			if (elementClass && elementClass.indexOf(className) != -1 && hasClassName.test(elementClass))
				results.push(element);
		}

		return results;
	}
}
ContentHeight();
}


window.onresize = function(){
	ContentHeight();	
}