function popupWin(url) {
		var w = screen.width;
		var h = screen.height;
		var adj=10;

		if(w<740){
		  var lift=0.90;
		}
		if(w>=740 & w<835){
		  var lift=0.91;
		}
		if(w>=835){
		  var lift=0.93;
		}
		
	    var posTop =  ((h-(600/lift)-adj)/2);
		var posLeft = ((w-(600)-adj)/2);
		posTop = parseInt(posTop);
		posLeft = parseInt(posLeft);	
		window.open(url,null,"height=600,width=600,status=no,toolbar=no,menubar=no,location=no,resizable=yes,scrollbars=yes,left="+posLeft+",top="+posTop);
	}