// JavaScript Document

function init(){
	placeFooter();
	//preloadImgs();
}

function placeFooter(){
	var heightNum = pageHeight() - 35;
	var heightStr = heightNum.toString() + "px";
	document.getElementById('content').style.minHeight = heightStr;
	
	var leftbar = document.getElementById("leftbar");
	var rightbar = document.getElementById("content");
	var leftfoot = document.getElementById("foot_menu");
	var rightfoot = document.getElementById("foot_content");
	if(leftbar.style.pixelheight){
		if(leftbar.style.pixelheight >= rightbar.style.pixelheight){
			leftfoot.style.display = 'block';
			rightfoot.style.display = 'none';
		}
		else{
			leftfoot.style.display = 'none';
			rightfoot.style.display = 'block';
		}
	}
	else if(leftbar.offsetHeight){
		if(leftbar.offsetHeight >= rightbar.offsetHeight){
			leftfoot.style.display = 'block';
			rightfoot.style.display = 'none';
		}
		else{
			leftfoot.style.display = 'none';
			rightfoot.style.display = 'block';
		}
	}
	else{
		alert("Error aligning footer");
	}
}

function pageHeight(){
	if(window.innerHeight){
		return window.innerHeight;
	}
	else if(document.body.clientHeight){
		return document.body.clientHeight;
	}
	else if(document.documentElement.clientHeight){
		return document.documentElement.clientHeight;
	}
	else{
		return 40;
	}
}


function preloadImgs(){
	var images = new Array("images/engineering_over.png", "images/pbj.png");
	var loading = new Image();
	for (i=0; i<images.length; i++){
		loading.src = images[i];
	}
}

function rollOver(obj){
	var height = 0;
	if(obj.style.pixelheight){
		height = obj.style.pixelheight;
	}
	else if(obj.offestHeight){
		height = obj.offsetHeight;
	}
	if(height != 0){
		
	}
}