//left navigation

var current = "0";
var preloadFlag = false;

	if (document.images) {
	// on state
		image1_on = newImage("img/homeON_tan.gif");
		image2_on = newImage("img/companyprofileON_tan.gif");
		image3_on = newImage("img/servicesON_tan.gif");
		image4_on = newImage("img/biographiesON_tan.gif");
		image5_on = newImage("img/clientlistON_tan.gif");
		image6_on = newImage("img/completedprojectsON_tan.gif");
		image7_on = newImage("img/projectbidsON_tan.gif");
		image8_on = newImage("img/contactON_tan.gif");
		
	// off state
		image1_off = newImage("img/homeOFF_tan.gif");
		image2_off = newImage("img/companyprofileOFF_tan.gif");
		image3_off = newImage("img/servicesOFF_tan.gif");
		image4_off = newImage("img/biographiesOFF_tan.gif");
		image5_on = newImage("img/clientlistOFF_tan.gif");
		image6_on = newImage("img/completedprojectsOFF_tan.gif");
		image7_on = newImage("img/projectbidsOFF_tan.gif");
		image8_on = newImage("img/contactOFF_tan.gif");

		preloadFlag = true;
	}

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

function changeImages(n,u) {

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

function setCur(n){
	if (current != "0"){
		document[current].src = eval(current+"_off").src;		
	}
	document[n].src = eval(n+"_on").src;
	current = n;
}

function init(){
	document['image1'].src=image1_on.src;
	current='image1';
}