function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		installation_serv_over = newImage("images/installation_serv-over.gif");
		work_over = newImage("images/work-over.gif");
		news_over = newImage("images/news-over.gif");
		brands_over = newImage("images/brands-over.gif");
		estimate_over = newImage("images/estimate-over.gif");
		service_over = newImage("images/service-over.gif");
		contact_over = newImage("images/contact-over.gif");
		preloadFlag = true;
	}
}
function showpopup( pageToLoad, winName, width, height, center) {

	    xposition=0; yposition=0;
	    if ((parseInt(navigator.appVersion) >= 4 ) && (center)){
	        xposition = (screen.width - width) / 2;
	        yposition = (screen.height - height) / 2;
	    }
	    args = "width=" + width + "," + "height=" + height + "," + "location=0," + "menubar=0," + "resizable=1," + "scrollbars=0," + "status=0," + "titlebar=0," + "toolbar=0," + "hotkeys=0," + "screenx=" + xposition + "," + "screeny=" + yposition + "," + "left=" + xposition + "," + "top=" + yposition;           
	    window.open( pageToLoad,winName,args );

}

function ChangeBG(sDivID,sPhoto,sCaption) {
       
        	document.getElementById('mainphoto').style.background='url('+sPhoto+')'; 
        	document.getElementById('mainphotocaption').innerHTML = sCaption;
		
}