function el(id) {
	return document.getElementById(id);
}
function jump(url) {
	window.location=url;
}
function setOp(ele,op) {
	var elem=el(ele);
	elem.style.filter="progid:DXImageTransform.Microsoft.Alpha(opacity="+op+");";
	elem.style.opacity=op/100;
	if(op<=0) {
		elem.style.display='none';
	}
}
function fade(ele,dur,from,to) {
	var elem=el(ele);
	op = from;
	setOp(ele,op);
	if(from<to) {
		var cnt=0;
		var time=(dur*1000)/(to-from);
		while(op<to) {
			op++;
			cnt++;
			setTimeout("setOp('"+ele+"',"+op+")",cnt*time);
		}
	} else {
		var cnt=0;
		var time=(dur*1000)/(from-to);
		while(op>=to) {
			op--;
			cnt++;
			setTimeout("setOp('"+ele+"',"+op+")",cnt*time);
		}
	}
}
function getElementsByClass(searchClass,node,tag) {
	var classElements=new Array();
	if(node==null)
	node = document;
	if(tag==null)
	tag='*';
	var els=node.getElementsByTagName(tag);
	var elsLen=els.length;
	var pattern=new RegExp("(^|\\s)"+searchClass+"(\\s|$)");
	for(i=0,j=0;i<elsLen;i++) {
	if(pattern.test(els[i].className)) {
	classElements[j]=els[i];
	j++;
	}
	}
	return classElements;
}



function showSubmeny(id) {
	el(id).style.display='block';
}
function hideSubmeny(id) {
	el(id).style.display='none';
}