function OpenWindow(url){
wx = 600;
wy = 600;
x = (screen.width  - wx) / 4 + 200;
y = (screen.height - wy) / 4 + 100;
newWin_t1 = window.open(url,"mini","scrollbars=1,resizable=1,left="+x+",top="+y+",width="+wx+",height="+wy);
newWin_t1.focus();
}