var intro = new Array();
intro['cctv'] = 'CCTV security system technology and CCTV equipment can be used in both internal and external environments to watch over and protect people, property, vehicles and valuables.';
intro['access'] = 'The threat of physical damage to valuable equipment and records, or data theft by criminals or discontented employees, rises daily. Restricting personnel, contractors\' or visitors\' access to buildings or areas is becoming ever more important.';
intro['fire'] = 'fire';
intro['auto'] = 'auto';
intro['service'] = 'service';
intro['case'] = 'case';

function homePageIntro(introId) {
	document.getElementById('intro').innerHTML = intro[introId];
}


function preloadImages() {

     // counter
     var i = 0;

     // create object
     imageObj = new Image();

     // set image list
     images = new Array();
     images[0]="../pics/nav_about2.gif"
     images[0]="../pics/nav_cctv2.gif"
     images[0]="../pics/nav_access2.gif"
     images[0]="../pics/nav_fire2.gif"
     images[0]="../pics/nav_auto2.gif"
     images[0]="../pics/nav_case2.gif"
     images[0]="../pics/nav_links2.gif"

     // start preloading
     for(i=0; i<=3; i++) 
     {
          imageObj.src=images[i];
     }

} 

function init() {
	// on load initialisations here
	preloadImages();
}
window.onload = init;