function showpic( imgName, imgCaption, imgWidth, imgHeight) {
if(imgWidth<=100)imgWidth=500
if(imgHeight<=100)imgHeight=500
winHeight=imgHeight+20;
w = window.open('','Demo','toolbar=no,top=110, left=80,location=no,directories=no,status=no,scrollbars=no,resizable=yes,copyhistory=no,width='+imgWidth+',height='+winHeight);
w.document.write( ""+imgCaption+"" );
w.document.write( "