var ie=document.all
var ns6=document.getElementById && !document.all
//var tipobj=document.all? document.all["dhtmltooltip"] : document.getElementById? document.getElementById("dhtmltooltip") : "";

function centerpopup(url_,name_,width_,height_,features_,offsetx_,offsety_)
{
	offsetx_ = (offsetx_) ? offsetx_ : 0;
	offsety_ = (offsety_) ? offsety_ : 0;
	leftpos = (screen.width) ? (screen.width-width_)/2 : 0;
	toppos = (screen.height) ? (screen.height-height_)/2 : 0;
	leftpos = leftpos + offsetx_;
	toppos = toppos + offsety_;
	features_ = 'height='+height_+',width='+width_+',top='+toppos+',left='+leftpos+','+features_;
	window.open(url_,name_,features_);
}