function PopUp(Url,WinName,Width,Height)
{
	LeftPosition	= (screen.availWidth) ? (screen.availWidth-Width)/2 : 0;  //screen.width-700
	TopPosition		= (screen.availHeight) ? (screen.availHeight-Height)/2 : 0;
	PopUpWin = window.open(Url,WinName,'menubar=no,scrollbars=no,toolbar=no,directories=no, left='+LeftPosition+' , top='+TopPosition+' ,width='+ Width +',height=' + Height)
	PopUpWin.focus()
}