function checkParent(refSite){
	var block = "yes";
	var url = refSite;
	if (self.opener != null) {
		var openersite = new String(self.opener.location);
		openersite = openersite.toLowerCase();				
		var newsite = openersite.substring(0,url.length);
		//alert('url : ' + url + '----- newsite : ' + newsite); 
		if (url == newsite) {
			block = "no";			
		}						
	}
	
	if (block == "yes") {
		//window.open("http://holcim.preview/NoPermission.aspx");	
		window.location = "http://biznews.siamcitycement.com/NoPermission.aspx";			
	}
}