function strTrim(tmpStr)
{
	tmpStr = tmpStr.replace(/^\s+/,"");//remove leading
	tmpStr = tmpStr.replace(/\s+$/,"");//remove trailing
	return tmpStr;
}
//------------------------------------------------------------------------------------
function trimFields()
{
	for(var i=0; i < obj.elements.length; i++)
	{
		if(obj.elements[i].type == "text" || obj.elements[i].type == "textarea" || obj.elements[i].type == "password")
		{
			obj.elements[i].value = strTrim(obj.elements[i].value);
		}
	}
}
//------------------------------------------------------------------------------------
function chkEmail(tmpStr)
{
	var email_pat = /^[a-z][a-z0-9_\.\-]*[a-z0-9]@[a-z0-9]+[a-z0-9\.\-_]*\.[a-z]+$/i;
	return(email_pat.test(tmpStr));
}
//------------------------------------------------------------------------------------
function chkURL(tmpStr)
{
	var url_pat = /^(http|https|ftp):\/\/([\w-]+\.)+[\w-]+(\/[\w-\.\/?%&amp;,=#@\/:]*)?/;
	return(url_pat.test(tmpStr));
}
//------------------------------------------------------------------------------------
function chkFile(tmpStr)
{
	var file_pat = /(.pdf)|(.mpeg)|(.wmv)|(.mp3)/;
	return(file_pat.test(tmpStr))
}

//=====================================================================
//=========Open a new window pop up with specific height and width=====
//=====================================================================
function showWindow(pageName, intWidth, intHeight)
{
	window.open(pageName, '', 'width='+intWidth+',height='+intHeight+',left=200,scrollbars=1,top=50,toolbar=0,menubar=0,location=0');
}