myWin=null;function openWin(x,y,url)
{var width=x;var height=y;var page=url.toString();var options="resizable=0,width="+width.toString();options+=",height="+height.toString();var leftborder=Math.ceil((screen.availWidth-width)/2);var topborder=Math.ceil((screen.availHeight-height)/2);options+=",left="+leftborder.toString();options+=",top="+topborder.toString();options+=",scrollbars=1";myWin=window.open(page,"myWin",options)
myWin.focus();}
function closeWin()
{if(myWin!=null)
if(!myWin.closed)
myWin.close();}