var child_window;
 
 function OpenModelPopup(Link)
   { 
   
        document.getElementById ('MaskedDiv').style.display='';
        document.getElementById ('MaskedDiv').style.visibility='visible';
        document.getElementById ('MaskedDiv').style.top='0px';
        document.getElementById ('MaskedDiv').style.left='0px';
        document.getElementById ('MaskedDiv').style.width=  document.documentElement.clientWidth + 'px';
        document.getElementById ('MaskedDiv').style.height= document.documentElement.clientHeight+ 'px';    	
    	child_window = window.open(Link, "", "scrollbars=no,menubar=no,toolbar=no");             	    	
    }
    
    function handle_onFocus() 
    {
	    if(child_window)
	    {
	        child_window.focus();
	    }
    }