var popNameWindow = null;  // This must be declared as a global
function MakePop(width,height) {
closePop();
var features = 'width=' + width + ',height=' + height;

 popNameWindow = window.open('','HMX',features);
 popNameWindow.focus();
 }

function openNewWindow(URLtoOpen, windowName, windowFeatures)
{
	closePop();
	//popNameWindow=window.open(URLtoOpen, windowName, windowFeatures);
	location.href=URLtoOpen.replace('popup','');
 //popNameWindow.focus();
 }
function closePop() {
    if ( ( popNameWindow != null ) && ( !popNameWindow.closed ))  {
        // window is still open -> close it
        popNameWindow.close();
        popNameWindow = null;
    }
}