window.onload=function()
{
    //nsidcLinkStyles();
    icesatLinkStyles();
    // add other functions to be called onload below
   
    writeCaption();
    window.setTimeout('cycle();',6000);
    (loadbanners());
    (urlswitch());
}

function icesatLinkStyles()
{
	var url = document.location.href;

// conditions for ICESat navigation

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

	
// Data Summaries
	if(url.match(/data.html/))
	{
		document.getElementById("navIcesatData").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatData').innerHTML = 'Data Summaries';	
	}
	
	if(url.match(/prelim.html/))
	{
		document.getElementById("navIcesatData").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatData').innerHTML = 'Data Summaries';	
	}
	
	
// Release Schedules
	
	if(url.match(/current_release_schedule.html/))
	{
		document.getElementById("navIcesatRelease").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatRelease').innerHTML = 'Release Schedules';
	}

	if(url.match(/past_release_schedule.html/))
	{
		document.getElementById("navIcesatRelease").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatRelease').innerHTML = 'Release Schedules';
	}
	
	if(url.match(/orbit_grnd_trck.html/))
	{
		document.getElementById("navIcesatRelease").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatRelease').innerHTML = 'Release Schedules';
	}


// Description of Data Releases
	
	if(url.match(/data_releases.html/))
	{
		document.getElementById("navIcesatVersions").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatVersions').innerHTML = 'Description of Data Releases';
	}
	
	if(url.match(/past_releases.html/))
	{
		document.getElementById("navIcesatVersions").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatVersions').innerHTML = 'Description of Data Releases';
	}

	if(url.match(/isips_release.html/))
	{
		document.getElementById("navIcesatVersions").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatVersions').innerHTML = 'Description of Data Releases';
	}

	if(url.match(/yxx_release_numbers.html/))
	{
		document.getElementById("navIcesatVersions").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatVersions').innerHTML = 'Description of Data Releases';
	}

	if(url.match(/format_changes_rel19.html/))
	{
		document.getElementById("navIcesatVersions").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatVersions').innerHTML = 'Description of Data Releases';
	}

	if(url.match(/format_changes_rel22.html/))
	{
		document.getElementById("navIcesatVersions").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatVersions').innerHTML = 'Description of Data Releases';
	}

	if(url.match(/format_changes_rel24.html/))
	{
		document.getElementById("navIcesatVersions").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatVersions').innerHTML = 'Description of Data Releases';
	}

	if(url.match(/format_changes_rel26.html/))
	{
		document.getElementById("navIcesatVersions").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatVersions').innerHTML = 'Description of Data Releases';
	}


	if(url.match(/format_changes_rel28.html/))
	{
		document.getElementById("navIcesatVersions").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatVersions').innerHTML = 'Description of Data Releases';
	}

// Order Data
	
	if(url.match(/order.html/))
	{
		document.getElementById("navIcesatOrderData").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatOrderData').innerHTML = 'Order Data';
	}


// Laser Operational Periods
	
	if(url.match(/laser_op_periods.html/))
	{
		document.getElementById("navIcesatLaser").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatLaser').innerHTML = 'Laser Operational Periods';
	}

	if(url.match(/laser1_orbit.html/))
	{
		document.getElementById("navIcesatLaser").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatLaser').innerHTML = 'Laser Operational Periods';
	}


	if(url.match(/laser2a_orbit.html/))
	{
		document.getElementById("navIcesatLaser").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatLaser').innerHTML = 'Laser Operational Periods';
	}

	if(url.match(/laser2b_orbit.html/))
	{
		document.getElementById("navIcesatLaser").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatLaser').innerHTML = 'Laser Operational Periods';
	}

	if(url.match(/laser2c_orbit.html/))
	{
		document.getElementById("navIcesatLaser").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatLaser').innerHTML = 'Laser Operational Periods';
	}


	if(url.match(/laser3a_orbit.html/))
	{
		document.getElementById("navIcesatLaser").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatLaser').innerHTML = 'Laser Operational Periods';
	}

	if(url.match(/laser3b_orbit.html/))
	{
		document.getElementById("navIcesatLaser").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatLaser').innerHTML = 'Laser Operational Periods';
	}

	if(url.match(/laser3c_orbit.html/))
	{
		document.getElementById("navIcesatLaser").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatLaser').innerHTML = 'Laser Operational Periods';
	}


	if(url.match(/laser3d_orbit.html/))
	{
		document.getElementById("navIcesatLaser").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatLaser').innerHTML = 'Laser Operational Periods';
	}

	if(url.match(/laser3e_orbit.html/))
	{
		document.getElementById("navIcesatLaser").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatLaser').innerHTML = 'Laser Operational Periods';
	}
	
	if(url.match(/laser3f_orbit.html/))
	{
		document.getElementById("navIcesatLaser").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatLaser').innerHTML = 'Laser Operational Periods';
	}


	if(url.match(/laser3g_orbit.html/))
	{
		document.getElementById("navIcesatLaser").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatLaser').innerHTML = 'Laser Operational Periods';
	}

	if(url.match(/laser3h_orbit.html/))
	{
		document.getElementById("navIcesatLaser").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatLaser').innerHTML = 'Laser Operational Periods';
	}
	
	if(url.match(/laser3i_orbit.html/))
	{
		document.getElementById("navIcesatLaser").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatLaser').innerHTML = 'Laser Operational Periods';
	}


	if(url.match(/laser3j_orbit.html/))
	{
		document.getElementById("navIcesatLaser").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatLaser').innerHTML = 'Laser Operational Periods';
	}
	

// Tools
	
	if(url.match(/tools.html/))
	{
		document.getElementById("navIcesatTools").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatTools').innerHTML = 'Tools';
	}		
	
// Image Gallery

	if(url.match(/gallery.html/))
	{
		document.getElementById("navIcesatImageGallery").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatImageGallery').innerHTML = 'Image Gallery';
	}

	if(url.match(/amery.html/))
	{
		document.getElementById("navIcesatImageGallery").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatImageGallery').innerHTML = 'Image Gallery';
	}
	
	if(url.match(/icesat.html/))
	{
		document.getElementById("navIcesatImageGallery").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatImageGallery').innerHTML = 'Image Gallery';
	}	

	if(url.match(/icesat_bus.html/))
	{
		document.getElementById("navIcesatImageGallery").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatImageGallery').innerHTML = 'Image Gallery';
	}

	if(url.match(/icesat_fairing.html/))
	{
		document.getElementById("navIcesatImageGallery").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatImageGallery').innerHTML = 'Image Gallery';
	}


	if(url.match(/icesat_spots.html/))
	{
		document.getElementById("navIcesatImageGallery").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatImageGallery').innerHTML = 'Image Gallery';
	}

	if(url.match(/icesat_spots_santa_rosa.html/))
	{
		document.getElementById("navIcesatImageGallery").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatImageGallery').innerHTML = 'Image Gallery';
	}

	if(url.match(/hektoria.html/))
	{
		document.getElementById("navIcesatImageGallery").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatImageGallery').innerHTML = 'Image Gallery';
	}

	if(url.match(/backscatter.html/))
	{
		document.getElementById("navIcesatImageGallery").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatImageGallery').innerHTML = 'Image Gallery';
	}


	if(url.match(/pbl_greatbasin.html/))
	{
		document.getElementById("navIcesatImageGallery").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatImageGallery').innerHTML = 'Image Gallery';
	}


// News
	
	if(url.match(/news.html/))
	{
		document.getElementById("navIcesatNews").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatNews').innerHTML = 'News';
	}
	
// FAQs
	
	if(url.match(/faq.html/))
	{
		document.getElementById("navIcesatFaqs").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatFaqs').innerHTML = 'FAQs';
	}	
	
// Research
	
	if(url.match(/publications/))
	{
		document.getElementById("navIcesatResearch").className = "secondarySiteNavActiveNoSubnav";
		document.getElementById('navIcesatResearch').innerHTML = 'Published Research';
	}
		
// if none of these conditions, do nothing
	
	else {}
	
}