function wopen(url, w, h, wext, hext) 
	{
	
		 // Fudge factors for window decoration space.
		// In my tests these work well on all platforms & browsers.
					w += wext;
        h += hext;
		var win = window.open(url,
			'popup', 
			'width=' + w + ', height=' + h + ', ' +
			'location=no, menubar=no, ' +
			'status=yes, toolbar=no, scrollbars=yes, resizable=yes');
		if (win.opener == null) { // for Nav 2.0x 
		 win.opener = self // this creates and sets a new property 
		}
		win.resizeTo(w, h);
		win.focus();
	}
	
function checkEnter(e){ //e is event object passed from function invocation
	var characterCode //literal character code will be stored in this variable
	
	if(e && e.which){ //if which property of event object is supported (NN4)
		e = e
		characterCode = e.which //character code is contained in NN4's which property
	}
	else{
		e = event
		characterCode = e.keyCode //character code is contained in IE's keyCode property
	}
	
	if(characterCode == 13){ //if generated character code is equal to ascii 13 (if enter key)
	//	document.forms[0].submit() //submit the form
		return false 
	}
	else{
		return true 
	}

}