function openPopup(u,n,w,h,o,c){
	var l=t=18;
	if(c){
		l=(screen.availWidth-w)/2;
		t=(screen.availHeight-h)/2;
	}
	p=window.open(u,'pop_'+n,'left='+l+',top='+t+',width='+w+',height='+h+',scrollbars='+((o)?','+o:''));
	}