function numbersonly(myfield, e, dec){
	var key;
	var keychar;
	
	if (window.event)
	   key = window.event.keyCode;
	else if (e)
	   key = e.which;
	else
	   return true;
	keychar = String.fromCharCode(key);
	
	// control keys
	if ((key==null) || (key==0) || (key==8) || 
		(key==9) || (key==13) || (key==27) )
	   return true;
	
	// numbers
	else if ((("0123456789").indexOf(keychar) > -1))
	   return true;
	
	// decimal point jump
	else if (dec && (keychar == "."))
	   {
	   myfield.form.elements[dec].focus();
	   return false;
	   }
	else
   return false;
}

// Öppnar nytt fönster med fix storlek
function openPopup(page,winName) {
	var winWidth = '650';
	var winHeight = '600';
	window.open(page, winName, 'height='+winHeight+',width='+winWidth+',scrollbars=1,resizable=0,menubar=0,toolbar=0,status=1,location=0,directories=0,left=150,top=100');
}