nav_home_up=new Image();
nav_home_up.src="images/nav/nav_home_up.gif";
nav_home_over=new Image();
nav_home_over.src="images/nav/nav_home_over.gif";

nav_knowledgezone_up=new Image();
nav_knowledgezone_up.src="images/nav/nav_knowledgezone_up.gif";
nav_knowledgezone_over=new Image();
nav_knowledgezone_over.src="images/nav/nav_knowledgezone_over.gif";

nav_locateabuilder_up=new Image();
nav_locateabuilder_up.src="images/nav/nav_locateabuilder_up.gif";
nav_locateabuilder_over=new Image();
nav_locateabuilder_over.src="images/nav/nav_locateabuilder_over.gif";
nav_locateabuilderspace = new Image();
nav_locateabuilderspace.src = "images/nav/nav_locateabuilderspace.gif";

nav_designtools_up = new Image();
nav_designtools_up.src = "images/nav/nav_designtools_up.gif";
nav_designtools_over = new Image();
nav_designtools_over.src = "images/nav/nav_designtools_over.gif";

nav_planshowcase_up=new Image();
nav_planshowcase_up.src="images/nav/nav_planshowcase_up.gif";
nav_planshowcase_over=new Image();
nav_planshowcase_over.src="images/nav/nav_planshowcase_over.gif";

nav_advancedsearch_up=new Image();
nav_advancedsearch_up.src="images/nav/nav_advancedsearch_up.gif";
nav_advancedsearch_over=new Image();
nav_advancedsearch_over.src="images/nav/nav_advancedsearch_over.gif";
nav_advancedspace=new Image();
nav_advancedspace.src="images/nav/nav_advancedspace.gif";

nav_Search_up = new Image();
nav_Search_up.src = "images/nav/nav_search_up.gif";
nav_Search_over = new Image();
nav_Search_over.src = "images/nav/nav_search_over.gif";

nav_Search1_up = new Image();
nav_Search1_up.src = "images/nav/nav_search1_up.gif";
nav_Search1_over = new Image();
nav_Search1_over.src = "images/nav/nav_search1_over.gif";

nav_Go_up = new Image();
nav_Go_up.src = "images/nav/nav_go_up.gif";
nav_Go_over = new Image();
nav_Go_over.src = "images/nav/nav_go_over.gif";

nav_Go2_up = new Image();
nav_Go2_up.src = "images/nav/nav_go_up.gif";
nav_Go2_over = new Image();
nav_Go2_over.src = "images/nav/nav_go_over.gif";

nav_savesearch_up = new Image();
nav_savesearch_up.src = "images/nav/nav_savesearch_up.gif";
nav_savesearch_over = new Image();
nav_savesearch_over.src = "images/nav/nav_savesearch_over.gif";

nav_send_up = new Image();
nav_send_up.src = "images/nav/nav_send_over.gif";
nav_send_over = new Image();
nav_send_over.src = "images/nav/nav_send_up.gif";

nav_signin_up = new Image();
nav_signin_up.src = "images/nav/nav_signin_over.gif";
nav_signin_over = new Image();
nav_signin_over.src = "images/nav/nav_signin_up.gif";
// End preload

function rollOver(imgName, sfx){
		document.images[imgName].src="images/nav/"+"nav_"+imgName+"_"+sfx+".gif";
}

function rollOut(imgName, sfx){
		document.images[imgName].src="images/nav/"+"nav_"+imgName+"_"+sfx+".gif";
}

	
function rollButtonHome(onOrOff)
{
	if (onOrOff == 1)
	{
		document.home.src="images/nav/nav_home_over.gif";
	}
	else
	{
		document.home.src="images/nav/nav_home_up.gif";
	}

}

function rollButtonPlan(onOrOff)
{
	if (onOrOff == 1)
	{
		document.planshowcase.src="images/nav/nav_planshowcase_over.gif";
	}
	else
	{
		document.planshowcase.src="images/nav/nav_planshowcase_up.gif";
	}
}

function rollButtonAnswer(onOrOff)
{
	if(onOrOff == 1)
	{
		document.answercenter.src="images/nav/nav_answercenter_over.gif";
	}
	else
	{
		document.answercenter.src="images/nav/nav_answercenter_up.gif";
	}
}

function rollButtonBuilder(onOrOff)
{
	if (onOrOff == 1)
	{
		document.locateabuilder.src = "images/nav/nav_locateabuilder_over.gif";
		document.space.src = "images/nav/nav_locateabuilderspace.gif";
	}
	else
	{
		document.locateabuilder.src = "images/nav/nav_locateabuilder_up.gif";
		document.space.src = "images/nav/nav_barspace.gif";
	}
}

function rollButtonDesignTools(onOrOff)
{
	if (onOrOff == 1)
	{
		document.designtools.src = "images/nav/nav_designtools_over.gif";
	}
	else
	{
		document.designtools.src = "images/nav/nav_designtools_up.gif";
	}
}

function rollButtonSearch(onOrOff)
{
	if (onOrOff == 1)
	{
		document.search.src="images/nav/nav_advancedsearch_over.gif"; document.space.src="images/nav/nav_advancedspace.gif";
	}
	else
	{
		document.search.src="images/nav/nav_advancedsearch_up.gif", document.space.src="images/nav/nav_barspace.gif";
	}
}

function rollButtonHome(onOrOff)
{
	if (onOrOff == 1)
	{
		document.home.src="images/nav/nav_home_over.gif";
	}
	else
	{
		document.home.src="images/nav/nav_home_up.gif";
	}
}