imgLoaded = false;

function MakeArray(n) {
	this.length = n;
	for (var i = 0; i< n; i++) this[i] = new Image();
	return this;
}

function preloadImg(locale, section) {

	if (document.images) {  

		switch(section) {
			case 'company':
				leftnav = new MakeArray(10);
				leftnav[0].src = "images/"+locale+"/leftNav_company_overview.gif";
				leftnav[1].src = "images/"+locale+"/leftNav_company_overview_on.gif";
				leftnav[2].src = "images/"+locale+"/leftNav_world.gif";
				leftnav[3].src = "images/"+locale+"/leftNav_world_on.gif";
				leftnav[4].src = "images/"+locale+"/leftNav_sci_commit.gif";
				leftnav[5].src = "images/"+locale+"/leftNav_sci_commit_on.gif";
				leftnav[6].src = "images/"+locale+"/leftNav_qa.gif";
				leftnav[7].src = "images/"+locale+"/leftNav_qa_on.gif";
				leftnav[8].src = "images/"+locale+"/leftNav_press.gif";
				leftnav[9].src = "images/"+locale+"/leftNav_press_on.gif";
				imgLoaded = true;
				break;
			case 'products':
				leftnav = new MakeArray(10);
				leftnav[0].src = "images/"+locale+"/leftNav_prod_overview.gif";
				leftnav[1].src = "images/"+locale+"/leftNav_prod_overview_on.gif";
				leftnav[2].src = "images/"+locale+"/leftNav_wl_central.gif";
				leftnav[3].src = "images/"+locale+"/leftNav_wl_central_on.gif";
				leftnav[4].src = "images/"+locale+"/leftNav_articles.gif";
				leftnav[5].src = "images/"+locale+"/leftNav_articles_on.gif";
				leftnav[6].src = "images/"+locale+"/leftNav_testimonials.gif";
				leftnav[7].src = "images/"+locale+"/leftNav_testimonials_on.gif";
				leftnav[8].src = "images/"+locale+"/leftNav_glossary.gif";
				leftnav[9].src = "images/"+locale+"/leftNav_glossary_on.gif";
				imgLoaded = true;
				break;
			case 'getHL':
				leftnav = new MakeArray(4);
				leftnav[0].src = "images/"+locale+"/leftNav_get_overview.gif";
				leftnav[1].src = "images/"+locale+"/leftNav_get_overview_on.gif";
				leftnav[2].src = "images/"+locale+"/leftNav_find.gif";
				leftnav[3].src = "images/"+locale+"/leftNav_find_on.gif";
				imgLoaded = true;
				break;
			case 'opp':
				leftnav = new MakeArray(12);
				leftnav[0].src = "images/"+locale+"/leftNav_opp_overview.gif";
				leftnav[1].src = "images/"+locale+"/leftNav_opp_overview_on.gif";
				leftnav[2].src = "images/"+locale+"/leftNav_change.gif";
				leftnav[3].src = "images/"+locale+"/leftNav_change_on.gif";
				leftnav[4].src = "images/"+locale+"/leftNav_advantage.gif";
				leftnav[5].src = "images/"+locale+"/leftNav_advantage_on.gif";
				leftnav[6].src = "images/"+locale+"/leftNav_opp_start.gif";
				leftnav[7].src = "images/"+locale+"/leftNav_opp_start_on.gif";
				leftnav[8].src = "images/"+locale+"/leftNav_opp_testimonials.gif";
				leftnav[9].src = "images/"+locale+"/leftNav_opp_testimonials_on.gif";
				leftnav[10].src = "images/"+locale+"/leftNav_opp_find.gif";
				leftnav[11].src = "images/"+locale+"/leftNav_opp_find_on.gif";
				imgLoaded = true;
				break;
		}
	}
	window.self.focus();
}

function leftNavHighlight(imgName)  {
	if (document.images && imgLoaded) {
		document[imgName].src = document[imgName].src.substring(0,document[imgName].src.length-4) + "_on.gif";
	}
}

function leftNavUnHighlight(imgName) {
	if (document.images && imgLoaded) {
		document[imgName].src = document[imgName].src.substring(0,document[imgName].src.length-7) + ".gif";
	}
}