// JScript File

//preload images
if (document.images)
    {
    //preload homepage header images. 6 application images and 2 compus images
      headerImg1= new Image();
      contentImg2= new Image();
      contentImg3= new Image();
//      headerImg4= new Image();
//      headerImg5= new Image();
//      headerImg6= new Image();
//      headerImg7= new Image();
//      headerImg8= new Image();
      
//      headerImg1.src="Images/Header_Image/home_header/ccm_sims_img12e.jpg";
//      headerImg2.src="Images/Header_Image/home_header/RoseQuartzFiber_NanoSIMS1.jpg";
//      headerImg5.src="Images/Header_Image/home_header/RoseQuartzFiber.jpg";
    
        //preload Header image
        headerImg1.src="Images/Header_Image/home_header/Campus.jpg";
       //preload home page content images 
        contentImg2.src="Images/Instruments/CCM_SIMS_IMG6_small.jpg";
        contentImg3.src="Images/Instruments/CCM_SIMS_IMG5_small.jpg";
    }
    

//display header random images
        function DisplayHeaderRandomImages()
        {
        var mess;  
        var max;
        var num;
       
        mess = new Array(
                        'Images/Header_Image/home_header/Campus.jpg',
                        'Images/Header_Image/home_header/CCM_SIMS_IMG12e.jpg',
                        'Images/Header_Image/home_header/RoseQuartzFiber.jpg',
                        'Images/Header_Image/home_header/RoseQuartzFiber_NanoSIMS1.jpg'
                        );
 //       mess = new Array('headerImg1.src','headerImg2.src','headerImg3.src','headerImg4.src');
        max = mess.length;
        num = Math.floor((Math.random() * max));
        //num = Math.round((max-1)*Math.random());
        document.c1_img.src = mess[num];
        }