var win = null;
function up(url,name,w,h,scroll,res){

leftp = (screen.width) ? (screen.width-w)/2 : 0;
topp = (screen.height) ? (screen.height-h)/2 : 0;

set ='height='+h+',width='+w+',top='+topp+',left='+leftp+',scrollbars='+scroll+',resizable='+res+','

win = window.open(url,name,set)
}