function BuildPage() {
	var h = document.getElementById("center-block").offsetHeight;
	var	hL = document.getElementById("sidebar-left").offsetHeight;
	if (document.getElementById("sidebar-right")) {
		var hR = document.getElementById("sidebar-right").offsetHeight;
		document.getElementById("center-block").style.marginRight = 235 + "px";
		document.getElementById("center-block").style.display = "none";
		document.getElementById("center-block").style.display = "block";
		h = document.getElementById("center-block").offsetHeight;
		if (h<hL) h = hL;
		if (h<hR) h = hR;
		document.getElementById("sidebar-right").style.height = h + "px";
		document.getElementById("sidebar-left").style.height = h + "px";
		document.getElementById("center-block").style.height = h + "px";
		document.getElementById("footer").style.display = "none";
		document.getElementById("contacts").style.display = "none";
		document.getElementById("footer").style.display = "block";
		document.getElementById("contacts").style.display = "block";
	}
	else {
		if (h>hL) {
			document.getElementById("sidebar-left").style.height = h + "px";
		};
		if (h<hL) {
			document.getElementById("center-block").style.height = hL + "px";
		}
	}
};

//Запуск функции построения страницы
if (window.addEventListener) window.addEventListener('load', function () {BuildPage();}, false);
else window.attachEvent('onload', function () {BuildPage();});