function GetCkValue( name ) {	
	var dc=document.cookie;
	var prefix=name+"=";
	var begin=dc.indexOf("; "+prefix);
	if(begin==-1) begin=dc.indexOf(prefix);
	else begin+=2;
	if(begin==-1) return "";
	var end=document.cookie.indexOf(";",begin);
	if(end==-1) end=dc.length;	
	return dc.substring(begin+prefix.length,end);
}