function change_bg(nav_item) {
	var oFor = document.getElementById("for");
	if (oFor == null) {
		return;
	}
	
	if (nav_item == 'm-thuis') {
		oFor.style.backgroundImage = "url(/App_Themes/BrinkSite/img/bg_thuis1-vervolg.gif)";
		//alert(oFor.className);
		oFor.className = "for thuis";
		//alert(oFor.className);
	}
	else if (nav_item == 'm-install') {
		oFor.style.backgroundImage = "url(/App_Themes/BrinkSite/img/bg_installers-vervolg.gif)";
		oFor.className = "for";
	}
	else if (nav_item == 'm-businessp') {
		oFor.style.backgroundImage = "url(/App_Themes/BrinkSite/img/bg_businesspartners-vervolg.gif)";
		oFor.className = "for businesspartners";
	}
	
	if (nav_item == 'h-thuis') {
		oFor.style.backgroundImage = "url(/App_Themes/BrinkSite/img/bg_thuis1.gif)";
		//alert(oFor.className);
		oFor.className = "for thuis";
		//alert(oFor.className);
	}
	else if (nav_item == 'h-install') {
		oFor.style.backgroundImage = "url(/App_Themes/BrinkSite/img/bg_installers.gif)";
		oFor.className = "for";
	}
	else if (nav_item == 'h-businessp') {
		oFor.style.backgroundImage = "url(/App_Themes/BrinkSite/img/bg_businesspartners.gif)";
		oFor.className = "for businesspartners";
	}
	
	//homepage
	if (nav_item == 'h-thuisbus') {
		//oFor.style.backgroundPosition = "0 -1px";
		//alert(oFor.className);
		oFor.className = "for thuis";
		//alert(oFor.className);
	}
	else if (nav_item == 'h-installateurs') {
		//oFor.style.backgroundPosition = "0 -232px";
		oFor.className = "for installateurs";
	}
	else if (nav_item == 'h-voorbusiness') {
		//oFor.style.backgroundPosition = "0 -464px";
		oFor.className = "for businesspartners";
	}
	else if (nav_item == 'h-corporate') {
		//oFor.style.backgroundPosition = "0 -696px";
		oFor.className = "for home";
	}
	
	//small vervolg
	if (nav_item == 'c-thuisbus') {
		//oFor.style.backgroundPosition = "0 -1px";
		//alert(oFor.className);
		oFor.className = "for thuis";
		//alert(oFor.className);
	}
	else if (nav_item == 'c-installateurs') {
		//oFor.style.backgroundPosition = "0 -232px";
		oFor.className = "for installateurs";
	}
	else if (nav_item == 'c-voorbusiness') {
		//oFor.style.backgroundPosition = "0 -464px";
		oFor.className = "for businesspartners";
	}
}

function restoreCorporateWerkenImage(div) {
	div.className = "for corporate-werken";
}

function restoreCorporateImage(div) {
	div.className = "for corporate-default";
}

function restoreBusinessImage(div) {
//	div.style.backgroundPosition = "0 -464px";
	div.className = "for business-default";
}

function restoreInstallateursImage(div) {
	//div.style.backgroundPosition = "0 -232px";
	div.className = "for installateurs-default";
}

function restoreHomeImage(div) {
	div.className = "for homepage-default";
}