function IsEmpty(aTextField){
         if(trim(aTextField.value)==''){
         
			return true;
	   }
	   return false;
}
function trim( str ) {
	// Immediately return if no trimming is needed
	if( (str.charAt(0) != ' ') && (str.charAt(str.length-1) != ' ') ) { return str; }
	// Trim leading spaces
	while( str.charAt(0)  == ' ' ) {
		str = '' + str.substring(1,str.length);
	}
	// Trim trailing spaces
	while( str.charAt(str.length-1)  == ' ' )
	{
		str = '' + str.substring(0,str.length-1);
	}

	return str;
}
function checkext(field, ext)
{
		s = trim(field.value);
		last = s.substr(s.length-4, s.length-1);
		if(last != ext)
		{
				return false;
		}
		return true;
}
function Creset() {
   CKEDITOR.instances["txtContent"].setData();
}
function Nreset() {
	document.frmAddNews.reset();
   CKEDITOR.instances["txtContent"].setData();
}
function Sreset() {
	document.frmAddStaff.reset();
   CKEDITOR.instances["txtContent"].setData();
}
function selectAll(n) {
	var sel = document.getElementsByName('txtFileName[]');
	sel[n].select();
}
function selectAllStaff(n) {
	var sel = document.getElementsByName('txtStaffName[]');
	sel[n].select();
}
function echeck(str) {
	emailRegEx = /^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i;
	if (str.search(emailRegEx) == -1) {
		alert("Please enter a valid email address");
		return false;
	}
	return true;
}
function hcheck(str,msg) {
	httpRegEx = /http:/i;
	if (str.search(httpRegEx) != -1) {
		alert(msg);
		return false;
	}
	return true;
}

function ucheck(str) {
	var re = new RegExp('/^http\://[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(/\S*)?$/i');
	var m = re.exec(str);
	if (m != null) {
		return true;
	}
	return false;
}