var helpWnd=null;

function isEmpty(form,field)
{
	var txt = form[field].value;
	if(txt=="")return true
	for(var i=0; i<txt.length; i++)
		if(txt.charAt(i)!=" ")
			return false
	 
	return true;
}

	var d = document;
	var isNS = (d.layers)?true:false;
	var isIE = (d.all)?true:false;
	var isDom = (!isIE&&d.getElementById)?true:false;
	var isOpera=navigator.userAgent.indexOf("Opera")!=-1;
	var vis = false;
	
/*

*/
function showLayer(text)
{
	var ver = navigator.userAgent;
	
	if(ver.search('MSIE') != -1 && ver.search('Opera') == - 1)
	{
		var top_ = document.body.scrollTop+120;
		var left_ = document.body.clientWidth-250;
	}
	else
	{
		var top_ = window.pageYOffset + 90 + 'px';
		var left_ = window.innerWidth - 250 + 'px';
	}
//	document.getElementById("hint").style.top= top_;
//	document.getElementById("hint").style.left= left_
	if(isDom)
	{
//		alert("this")
		var doc = document.getElementById('hint');
		doc.style.top= top_;
		doc.style.left= left_;
		eval("doc.style.visibility=\'visible\'");
		doc.innerHTML="<div>"+text+"</div>";
	}
	if(isIE)
	{
		eval("d.all.hint.style.visibility=\'visible\'");
		d.all.hint.style.top = top_;
		d.all.hint.style.left = left_;
		d.all.hint.innerHTML="<div>"+text+"</div>";
	}
	if(isNS)
	{
		d['hint'].style.top = top_;
		d['hint'].style.left = left_;
		d['hint'].visibility = 'show';
		d['hint'].innerHTML = "<div>"+text+"</div>";
	}
	
}

function hideLayer()
{
	if(isDom)
	{
		var doc = document.getElementById('hint');
		eval("doc.style.visibility=\'hidden\'");
	}
	
	if(isIE)
	{
		eval("d.all.hint.style.visibility=\'hidden\'");
	}
	
	if(isNS)
	{
		if (vis == false) setTimeout('d[\'hint\'].visibility = \'hide\';',1500);
		else setTimeout('d[\'hint\'].visibility = \'show\';',1500);
	}
}