var btc =
{
	onloadHooked : false,
	addLoadEvent : function (func) {
		if (!this.onloadHooked) {
			this.onloadHooked = true;
			var oldonload = window.onload;
			if (typeof window.onload != 'function') {
				window.onload = func;
			} 
			else {
				window.onload = function() {
				if (oldonload) {
					oldonload();
				}
				func();
				}
			}
		}
		else {
		}
	}
}