// JavaScript Document
function addEvent (elm, evType,fn,useCapture)
{
    if (elm.addEventListener)
    {
        elm.addEventListener (evType, fn, useCapture);
        return (true);
    }
    else if (elm.attachEvent)
    {
        var r = elm.attachEvent('on'+evType, fn);
        return (r);
    }
}
function removeEvent (elm, evType,fn,useCapture)
{
    if (elm.removeEventListener)
    {
        elm.removeEventListener (evType, fn, useCapture);
        return (true);
    }
    else if (elm.attachEvent)
    {
        var r = elm.detachEvent('on'+evType, fn);
        return (r);
    }
}
function getPosition(arrayName,arrayItem)
{
    for(var i=0;i<arrayName.length;i++){ 
       if(arrayName[i]==arrayItem)
            return i;
    }
	return (-1);
}