//
// ESTABLISH BROWSER AND PLATFORM
//

var agt = navigator.userAgent.toLowerCase();
var is_major = parseInt(navigator.appVersion);
var is_minor = parseFloat(navigator.appVersion);

var is_nav    = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1) && (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1) && (agt.indexOf('webtv')==-1));
var is_nav4   = (is_nav && (is_major == 4));
var is_nav4up = (is_nav && (is_major >= 4));
var is_nav5   = (is_nav && (is_major == 5));
var is_nav5up = (is_nav && (is_major >= 5));

var is_nav5dn = (is_nav && (is_major <= 5));


var is_ie    = (agt.indexOf("msie") != -1);
var is_ie4   = (is_ie && (is_major == 4) && (agt.indexOf("msie 5")==-1) );
var is_ie4up = (is_ie && (is_major >= 4));
var is_ie5   = (is_ie && (is_major == 4) && (agt.indexOf("msie 5")!=-1) );
var is_ie5up = (is_ie && !is_ie4);

var is_aol   = (agt.indexOf("aol") != -1);
var is_aol4  = (is_aol && is_ie4);

var is_opera = (agt.indexOf("opera") != -1);
var is_webtv = (agt.indexOf("webtv") != -1);

var is_win = ( (agt.indexOf("win")!=-1) || (agt.indexOf("16bit")!=-1) );
var is_mac = (agt.indexOf("mac")!=-1);

var nscp4 = is_nav4;
var ie4   = is_ie4;
var dom1  = (is_nav5up || is_ie5up);

if (is_mac && is_ie5)
{	
	dom1 = false;
}

//
// CREATE APPROPRIATE OBJECT
//

function getObj(obj)
{	if (dom1)
	{	
		compLayr = document.getElementById(obj).style;
	}
	else if (nscp4)
	{	
		compLayr = document.layers[obj];
	}
	else
	{	
		compLayr = document.all[obj].style;
	}	
	return compLayr;
}

//
// CUSTOM APIs
//

//process arguments based on key
function getArgs(key) 
{
	var query= location.search.substring(1);
	var pairs = query.split("&");
	for(var i =0; i < pairs.length; i++) {
		var keyvalue = pairs[i].split("=");
		if (keyvalue.length !=2) continue;
		if (keyvalue[0] == key) return keyvalue[1];	
	}//for
	return -1; 
}	


function setTop(layr,num)
{	
	obj = getObj(layr);
	obj.top = num;
}

function setLeft(layr,num)
{	
	obj = getObj(layr);
	obj.left = num;
}

function getTop(layr)
{	
	obj = getObj(layr);
	if (dom1)
	{	
		return (document.getElementById(layr).offsetTop);
	}
	else if (nscp4)
	{	
		return (obj.top);
	}
	else
	{	
		return (obj.posTop);
	}
}

function getLeft(layr)
{	
	obj = getObj(layr);
	if (dom1)
	{	
		return (document.getElementById(layr).offsetLeft);
	}
	else if (nscp4)
	{	
		return (obj.left);
	}
	else
	{	
		return (obj.posLeft);
	}
}

function incTop(layr,num)
{	
	obj = getObj(layr);
	obj.top = getTop(layr) + num;
}

function incLeft(layr,num)
{	
	obj = getObj(layr);
	obj.left = getLeft(layr) + num;
}


function show(layr)
{
	obj = getObj(layr);
	obj.visibility = "visible";
}

function hide(layr)
{	
	obj = getObj(layr);
	obj.visibility = "hidden";
}

function layerWidth(layr)
{	
	if (dom1)
	{	
		return (document.getElementById(layr).offsetWidth);
	}
	else if (nscp4)
	{	
		return eval("document." + layr + ".document.width");
	}
	else
	{	
		return (document.all[layr].scrollWidth);
	}
}
	
function layerHeight(layr)
{	if (dom1)
	{	
		return (document.getElementById(layr).offsetHeight);
	}
	else if (nscp4)
	{	
		return eval("document." + layr + ".document.height");
	}
	else if (is_ie)
	{	
		return (document.all[layr].scrollHeight);
	}
	else
	{	
		return (0);
	}
}

function layerClip(layr,topA,rightA,bottomA,leftA)
{	
	obj = getObj(layr);
	if (dom1 || (ie4 && !is_mac))
	{	
		obj.clip = "rect(" + topA + " " + rightA + " " + bottomA + " " + leftA + ")";
	}
	else if (nscp4)
	{	
		obj.clip.top = topA;
		obj.clip.left = leftA;
		obj.clip.bottom = bottomA;
		obj.clip.right = rightA;
	}
	else if (ie4 && is_mac)
	{	
		obj.clip = "rect(0 100% 100% 0)";
	}
}

function browserWidth()
{	if (is_nav)
	{	return (window.innerWidth)
	}
	else
	{	return (document.body.clientWidth)
	}
}

function browserHeight()
{	if (is_nav)
	{	
		return (window.innerHeight);
	}
	else
	{	
		return (document.body.clientHeight);
	}
}


function imgon(layerName,imgName)
{
 if (nscp4)
 { 
  //eval("document." + layerName + ".document[imgName].src = " + imgName + "on.src");
  eval("document." + layerName + ".document.images[imgName].src = " + imgName + "on.src");
 }
 else if(dom1)
 { 
  document.getElementById(imgName).src = eval(imgName + "on.src");
 }
 else 
 {
  document [imgName].src = eval(imgName + "on.src");
 }
}
 
function imgoff(layerName,imgName)
{ 	
	if (nscp4)
	{ 
		//eval("document." + layerName + ".document[imgName].src = " + imgName + "off.src");
		eval("document." + layerName + ".document.images[imgName].src = " + imgName + "off.src");
	}
		else if(dom1)
	{ 
		document.getElementById(imgName).src = eval(imgName + "off.src");
	}
	else 
	{
		document [imgName].src = eval(imgName + "off.src");
	}
}

function printPage()
{
window.print();
}

function JumpTo(url)
{
location.href = url;
}