var browser_ie;
if(navigator.appVersion.indexOf('MSIE')>0) browser_ie=true
else browser_ie=false;
function retfalse() { return false; }
function gel(id){ return document.getElementById?document.getElementById(id):null }
function offsetAbsLeft(el) {
	return (el.offsetParent)? el.offsetLeft+offsetAbsLeft(el.offsetParent) : el.offsetLeft;
}
function offsetAbsTop(el) {
	return (el.offsetParent)? el.offsetTop+offsetAbsTop(el.offsetParent) : el.offsetTop;
}