function validateNumber(sFormName, field)
{
	var val = eval("document."+sFormName+"."+field+".value");
	if(!/^\d*$/.test(val)||val==0) {
    	alert("Please enter numbers greater than zero." );
		eval("document."+sFormName+"."+field+".focus()");
		eval("document."+sFormName+"."+field+".select()");
  	}
}

function popupnewwin(url) {
	var winpopup = window.open(url,'popup','height=600,width=800,menubar=yes,scrollbars=yes,status=no,toolbar=no,screenX=0,screenY=50,left=0,top=50,resizable=yes');	
}