function setHeight() {
    leftHeight = document.getElementById("left").offsetHeight;
    middleHeight = document.getElementById("middle").offsetHeight;

    
    if (leftHeight < middleHeight) {
        document.getElementById("left").style.height = middleHeight + 'px';
	} else {
	     document.getElementById("middle").style.height = leftHeight + 'px';
	}
}
function popup(page,title,width,height) {
     var winl = (screen.width - width) / 2;
     var wint = (screen.height - height) / 2; 
     window.open(''+page,''+title,'width='+width+',height='+height+',top='+wint+',left='+winl+',resizable=no,scrollbars=no,toolbar=no'); 
}