var lower;
var upper;
var numimages=3;
var preloader=new Image();
var rand_no = Math.ceil(numimages*Math.random());
for (var i=1; i<=numimages; i++)
{
	preloader.src="images/global/"+i+".jpg";
}


function onload_f()
{
//	fixbg();
	external();
	fader();
}

function fader()
{
	lower=document.getElementById("centerimage");
	lower.innerHTML='<div id="centerimage2"></div>';
	upper=document.getElementById("centerimage2");
	
	fade(100, "centerimage2");
	
	lower.style.background="url(images/global/" + rand_no + ".jpg)";
	
	lower.alt=(rand_no);
	lower.title=" ";
	setTimeout("fadenext()", 300);
}

function fixbg()
{
	wheight=document.getElementById("content").offsetTop;
	wheight=1*wheight+1*document.getElementById("content").clientHeight+"px";
	document.getElementById("slashes").style.height=wheight;
}

function external()
{
	atags=document.getElementsByTagName("a");

	for (ii=0; ii<atags.length; ii++)
	{
		if(atags[ii].title == "External Link" || atags[ii].title == "Continue Reading" || atags[ii].title == "New Window" || atags[ii].title == "View PDF")
			atags[ii].target="_blank";
	}
}

function fadenext()
{
	lower=document.getElementById("centerimage");
	upper=document.getElementById("centerimage2");
	var delayt=50;
	
	for (var z=100; z>=0; z-=2)
	{
		setTimeout("fade("+z+", 'centerimage2')" , 10*delayt);
		delayt++;
	}
	
	setTimeout("nextImg()", (50*delayt));
}

function nextImg()
{
	upper.style.background="url(images/global/" + lower.alt + ".jpg)";
	fade(100, "centerimage2");
	if(lower.alt==numimages)
		lower.alt=0;
	lower.style.background="url(images/global/" + (1*lower.alt+1) + ".jpg)";
	lower.alt=(1*lower.alt+1);
	fadenext();
}
				  
function fade(perct, elementN)
{
	document.getElementById(elementN).summary=perct;
	document.getElementById(elementN).style.opacity=(perct/100);
	document.getElementById(elementN).style.MozOpacity=(perct/100);
	document.getElementById(elementN).style.khtmlOpacity=(perct/100);
	document.getElementById(elementN).style.filter='alpha(opacity='+perct+')';
}