var pageLeft=null;
var pageRight=null;
var pageCentre=null;
var pageFooter=null;
var pageHeader=null;
var pageWrapper=null;

function initVars() {
	pageLeft=document.getElementById("pageContentLeft");
	pageCentre=document.getElementById("pageContentCentre");
	pageFooter=document.getElementById("pageFooter");
	pageHeader=document.getElementById("pageHeader");
	pageWrapper=document.getElementById("pageWrapper");
}

function fullHeight() {
	initVars();
	leftHeight=pageLeft.offsetHeight;
	centreHeight=pageCentre.offsetHeight;
	footerHeight=pageFooter.offsetHeight;
	
	//alert("Left: " + leftHeight + "px\nCentre: " + centreHeight + "px\nFooter: " + footerHeight);
	
	if(leftHeight > centreHeight + footerHeight) {
		pageCentre.style.height=(leftHeight - footerHeight-20) + 'px';
		pageLeft.style.height=leftHeight + 'px';
		pageWrapper.style.height=parseInt(pageHeader.offsetHeight + parseInt(pageLeft.style.height,10),10) + 'px';
	}
	else {
		pageCentre.style.height=centreHeight + 'px';
		pageLeft.style.height=(centreHeight + footerHeight+20) + 'px';
		pageWrapper.style.height=parseInt(pageHeader.offsetHeight + parseInt(pageLeft.style.height,10),10) + 'px';
	}
	
	//alert("Left: " + pageLeft.style.height + "\nCentre: " + pageCentre.style.height + "\nFooter: " + footerHeight + "px");
}