function createHTTPHandler()
{	var xmlhttp;
	try
	{	xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
        }
        catch (e)
        {	try
        	{	xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
                }
                catch (E)
                {	xmlhttp = false;
                }
	}
        if(!xmlhttp && typeof XMLHttpRequest != 'undefined')
         {	try
          	{	xmlhttp = new XMLHttpRequest();
			xmlhttp.overrideMimeType("text/xml");
		}
		catch (e)
		{	xmlhttp = false;
		}
	}	
	return xmlhttp;
}

function getWindowHeight()
{	var myWidth = 0, myHeight = 0;
        if( typeof( window.innerWidth ) == 'number' ) 
        {	//Non-IE
                myWidth = window.innerWidth;
                myHeight = window.innerHeight;
        } 
        else if ( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) )
        {	//IE 6+ in 'standards compliant mode'
                myWidth = document.documentElement.clientWidth;
                myHeight = document.documentElement.clientHeight;
        } 
        else if ( document.body && ( document.body.clientWidth || document.body.clientHeight ) )
        {	//IE 4 compatible
                myWidth = document.body.clientWidth;
                myHeight = document.body.clientHeight;
        }
        return(myHeight);
}