// JavaScript Document
/* ################################ GENERIC RANDOM BACKGROUND IMAGE ############################## */
/* This function changes the background image of the header, if no Javascript leaves the defaut in */

var n = 0;
function ChangeCSSBgImg() {
	if (!document.getElementById) return false;
	
	var MyElement = "header" //The ID of the element you want to change
//	var ImgPath = "http://mediafiles.thedms.co.uk/publication/ys-brad/headers/bradford/" //The file path to your images
	
	if (!document.getElementById(MyElement)) return false;
	
	var random_images = new Array ();
	random_images[0] = "pics/header1.jpg";
	random_images[1] = "pics/header2.jpg";
	random_images[2] = "pics/test1.jpg";
	random_images[3] = "pics/header1.jpg";
	
	var random_text = new Array ();
	random_text[0] = "Free Quotation Service and delivery to site of roof trusses (attic and standard) and engineered floor joists in 5 Days!";
	random_text[1] = 'You can request on online quotation right now for roof trusses or floors by <a href="http://www.minera-rooftrusses.com/quotes.html"><font color=cyan>clicking here</font></a>';
	random_text[2] = '<strong>Hello World!</strong>';
	random_text[3] = ''    +'<a  href=  "javascript:loadContent(\'trusses.html' 
   +'Link Text<\/a>';
   
	var $header = document.getElementById(MyElement);
	var $backgroundurl = $header.style.backgroundImage;
//	var ImgURL = "url(" + ImgPath + random_images[rand(random_images.length)] + ")";
//	var ImgURL = "url(" + random_images[rand(random_images.length)] + ")";
	var ImgURL = "url(" + random_images[n] + ")";
	
//	setInnerText('transinfo2', random_text[n])

//document.getElementById('transinfo2').innerHTML ='<strong>Hello World!</strong>';

document.getElementById('transinfo2').innerHTML =random_text[n];

   if (n<3) n=n+1; else n=0;


	if ($backgroundurl != ImgURL) {
		$header.style.backgroundImage = ImgURL;	
	}















	
	movement = setTimeout("ChangeCSSBgImg()",3000);
}



function setInnerText (elementId, text) {
var element;
if (document.getElementById) {
element = document.getElementById(elementId);
}
else if (document.all) {
element = document.all[elementId];
}
if (element) {
if (typeof element.textContent != 'undefined') {
element.textContent = text;
}
else if (typeof element.innerText != 'undefined') {
element.innerText = text;
}
else if (typeof element.removeChild != 'undefined') {
while (element.hasChildNodes()) {
element.removeChild(element.lastChild);
}
element.appendChild(document.createTextNode(text)) ;
}
}
}





/* random number generator */
function rand(n) {
  return ( Math.floor ( Math.random ( ) * n ) );
}

/* Custom onload function */
function addLoadEvent(func) {
  n=0;
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      oldonload();
      func();
    }
  }
}
/* trigger onload */
addLoadEvent(ChangeCSSBgImg);




function roll_over(img_name,img_src)
{document[img_name].src=img_src;}
function md(e)
{try{if(event.button==2||event.button==3)return false;}
catch(e){if(e.which==3)return false;}}
document.oncontextmenu=function(){return false;}
document.ondragstart=function(){return false;}
document.onmousedown=md;