window.onload=function()
{
	nsidcLinkStyles();
	modisLinkStyles();
	// add other functions to be called onload below
	
	writeCaption();
	window.setTimeout('cycle();',4000);
	(loadbanners());
	(urlswitch());
}

function modisLinkStyles()
{
	var url = document.location.href;
	
// conditions for Modis navigation 

//  Overview
	
	if(url.match(/\/modis\/index.html/))
	{
		document.getElementById("navModisOverview").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navModisOverview').innerHTML = 'Overview';
	}

// Data Summaries
	
	if(url.match(/data_summaries/))
	{
		document.getElementById("navModisDataSummaries").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navModisDataSummaries').innerHTML = 'Data Summaries';	
	}

// Data Versions
	
	if(url.match(/data_versions/))
	{
		document.getElementById("navModisDataVersions").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navModisDataVersions').innerHTML = 'Data Versions';
	}
	
// Image Gallery

	if(url.match(/gallery/))
	{
		document.getElementById("navModisImageGallery").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navModisImageGallery').innerHTML = 'Image Gallery';
	}
	
// Order Data
	
	if(url.match(/order_data.html/))
	{
		document.getElementById("navModisOrderData").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navModisOrderData').innerHTML = 'Order Data';
	}
	
// News

	// following statement overwrites main nav script so "News & Events" is turned off
	if(url.match(/\/news\//))
	{
		document.getElementById("newsNav").className = "trigger";
	}
	
	if(url.match(/news/))
	{
		document.getElementById("navModisNews").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navModisNews').innerHTML = 'News';
	}
	
	
// Research
	
	// following statement overwrites main nav script so "Science" is turned off
	if(url.match(/\/research\//))
	{
		document.getElementById("scienceNav").className = "trigger";
	}
	
	if(url.match(/research.html/))
	{
		document.getElementById("navModisResearch").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navModisResearch').innerHTML = 'Published Research';

	}
	
// FAQs
	
	if(url.match(/faq.html/))
	{
		document.getElementById("navModisFaqs").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navModisFaqs').innerHTML = 'FAQs';
	}
	
// Terra vs. Aqua
	
	if(url.match(/terra_aqua_differences/))
	{
		document.getElementById("navModisTerraVsAqua").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navModisTerraVsAqua').innerHTML = 'Terra vs. Aqua';
	}
	
// Tools
	
	if(url.match(/tools.html/))
	{
		document.getElementById("navModisTools").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navModisTools').innerHTML = 'Tools';
	}

// edg_tutorial should show up in 'tools'
	
	if(url.match(/edg_tutorial/))
	{
		document.getElementById("navModisTools").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navModisTools').innerHTML = 'Tools';
	}

// ms2gt should show up in 'tools'
	
	if(url.match(/ms2gt/))
	{
		document.getElementById("navModisTools").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navModisTools').innerHTML = 'Tools';
	}

// tile_search_wist_tutorial should show up in 'tools'
	
	if(url.match(/tile_search_wist_tutorial/))
	{
		document.getElementById("navModisTools").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navModisTools').innerHTML = 'Tools';
	}
	
// Visualization Aids
	
	if(url.match(/visualization_aids/))
	{
		document.getElementById("navModisVisualizationAids").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navModisVisualizationAids').innerHTML = 'Visualization Aids';
	}
	
// cmg_browse should show up in 'Visualization Aids'
	
	if(url.match(/cmg_browse/))
	{
		document.getElementById("navModisVisualizationAids").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navModisVisualizationAids').innerHTML = 'Visualization Aids';
	}
	
// Virtual Globe should show up in 'Visualization Aids'
	
	if(url.match(/virtual_globe/))
	{
		document.getElementById("navModisVisualizationAids").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navModisVisualizationAids').innerHTML = 'Visualization Aids';
	}
	

	else {}
			

}