promoImage = new Array ("images/promo_cytec.gif", "images/promo_sie.gif", "images/promo_mer.gif", "images/promo_aha.gif")
		promoURL = new Array ("clients/portfolio/web/cytec.html" , "clients/portfolio/video/sie2.html", "clients/portfolio/brochures/mer.html", "clients/portfolio/video/aha2.html")
	
		imgCt = promoImage.length
		
		function choosePic(){
			if (document.images){
				randomNum = Math.floor ((Math.random()*imgCt))
				document.promoBanner.src = promoImage[randomNum]
			}
		
		}
		
		function newLocation(){
			document.location.href = "" + promoURL[randomNum]
		
		}
		
		function WM_imageSwap(daImage, daSrc){
  
  
  		var objStr,obj;
  		/*
      		WM_imageSwap()
      		Changes the source of an image.

      		Source: Webmonkey Code Library
      		(http://www.hotwired.com/webmonkey/javascript/code_library/)

      		Author: Shvatz
      		Author Email: shvatz@wired.com

      		Usage: WM_imageSwap(originalImage, 'newSourceUrl');

      		Requires: WM_preloadImages() (optional, but recommended)
      		Thanks to Ken Sundermeyer (ksundermeyer@macromedia.com) for his help
     		 with variables in ie3 for the mac. 
      		*/

    		// Check to make sure that images are supported in the DOM.
    		if(document.images){
      		// Check to see whether you are using a name, number, or object
     		 if (typeof(daImage) == 'string') {
        		// This whole objStr nonesense is here solely to gain compatability
       		 // with ie3 for the mac.
        		objStr = 'document.' + daImage;
        		obj = eval(objStr);
        		obj.src = daSrc;
     		 } else if ((typeof(daImage) == 'object') && daImage && daImage.src) {
       		 daImage.src = daSrc;
      		}
   		 }
  		}

	function WM_preloadImages() {

     		 /*
     		 WM_preloadImages()
     		 Loads images into the browser's cache for later use.

     		 Source: Webmonkey Code Library
     		 (http://www.hotwired.com/webmonkey/javascript/code_library/)

     		 Author: Nadav Savio
     		 Author Email: nadav@wired.com

     		 Usage: WM_preloadImages('image 1 URL', 'image 2 URL', 'image 3 URL', ...);
     		 */

  		// Don't bother if there's no document.images
  		if (document.images) {
    	if (typeof(document.WM) == 'undefined'){
      		document.WM = new Object();
    	}
    	document.WM.loadedImages = new Array();
    	// Loop through all the arguments.
    	var argLength = WM_preloadImages.arguments.length;
    	for(arg=0;arg<argLength;arg++) {
     	 // For each arg, create a new image.
      	document.WM.loadedImages[arg] = new Image();
      	// Then set the source of that image to the current argument.
      	document.WM.loadedImages[arg].src = WM_preloadImages.arguments[arg];
    	}
 	 }
	}