startList = function() {
	
	if( !document.getElementById )
    		return;

	thehead = document.getElementById("header");

	var iRandSeed = Math.random();

		if( iRandSeed < 0.26 )
			thehead.className = "main_content_area_head1";
		else if( iRandSeed > 0.25 && iRandSeed < 0.51 )
			thehead.className = "main_content_area_head2";
		else if( iRandSeed > 0.5 && iRandSeed < 0.76 )
			thehead.className = "main_content_area_head3";
		else
			thehead.className = "main_content_area_head4"; 

  	navRoot = document.getElementById("nav");
	for (i=0; i<navRoot.childNodes.length; i++) {

	  	node = navRoot.childNodes[i];
			
	  	if (node.nodeName=="LI") {

 	    	node.onmouseover=function() {
	    		this.className+=" over";
	  		}

  	  		node.onmouseout=function() {
  	    		this.className=this.className.replace(" over", "");
   	  		}
		}
	}
		
	//TRIAL LINK
	document.getElementById("triallink").onmousedown = function() {
	
		element = document.getElementById("trial_reveal")

		if( element.className.search(" down") < 0 ) {
			element.className += " down";
		}
		else if( element.className.search(" over") >= 0 ) {
			element.className = element.className.replace(" over", "");						
		}
		else {
			element.className = element.className.replace(" down", "");
		}	
	}
	
	//UPDATE LINK
	document.getElementById("updatelink").onmousedown = function() {
	
		element = document.getElementById("update_reveal")

		if( element.className.search(" down") < 0 ) {
			element.className += " down";
		}
		else if( element.className.search(" over") >= 0 ) {
			element.className = element.className.replace(" over", "");						
		}
		else {
			element.className = element.className.replace(" down", "");
		}	
	}
/*	
	//SERG1K LINK
	document.getElementById("serg1link").onmousedown = function() {
	
		element = document.getElementById("serg1_reveal")

		if( element.className.search(" down") < 0 ) {
			element.className += " down";
		}
		else if( element.className.search(" over") >= 0 ) {
			element.className = element.className.replace(" over", "");						
		}
		else {
			element.className = element.className.replace(" down", "");
		}	
	}
	
	//SERG2K LINK
	document.getElementById("serg2link").onmousedown = function() {
	
		element = document.getElementById("serg2_reveal")

		if( element.className.search(" down") < 0 ) {
			element.className += " down";
		}
		else if( element.className.search(" over") >= 0 ) {
			element.className = element.className.replace(" over", "");						
		}
		else {
			element.className = element.className.replace(" down", "");
		}	
	}
*/	
	//SERG3K LINK
	document.getElementById("serg3link").onmousedown = function() {
	
		element = document.getElementById("serg3_reveal")

		if( element.className.search(" down") < 0 ) {
			element.className += " down";
		}
		else if( element.className.search(" over") >= 0 ) {
			element.className = element.className.replace(" over", "");						
		}
		else {
			element.className = element.className.replace(" down", "");
		}	
	}	
/*	
	//INSP1K LINK
	document.getElementById("insp1link").onmousedown = function() {
	
		element = document.getElementById("insp1_reveal")

		if( element.className.search(" down") < 0 ) {
			element.className += " down";
		}
		else if( element.className.search(" over") >= 0 ) {
			element.className = element.className.replace(" over", "");						
		}
		else {
			element.className = element.className.replace(" down", "");
		}	
	}
	
	//INSP2K LINK
	document.getElementById("insp2link").onmousedown = function() {
	
		element = document.getElementById("insp2_reveal")

		if( element.className.search(" down") < 0 ) {
			element.className += " down";
		}
		else if( element.className.search(" over") >= 0 ) {
			element.className = element.className.replace(" over", "");						
		}
		else {
			element.className = element.className.replace(" down", "");
		}	
	}
*/	
	//INSP3K LINK
	document.getElementById("insp3link").onmousedown = function() {
	
		element = document.getElementById("insp3_reveal")

		if( element.className.search(" down") < 0 ) {
			element.className += " down";
		}
		else if( element.className.search(" over") >= 0 ) {
			element.className = element.className.replace(" over", "");						
		}
		else {
			element.className = element.className.replace(" down", "");
		}	
	}	
	
	//DET1300 LINK
	document.getElementById("detlink").onmousedown = function() {
	
		element = document.getElementById("det_reveal")

		if( element.className.search(" down") < 0 ) {
			element.className += " down";
		}
		else if( element.className.search(" over") >= 0 ) {
			element.className = element.className.replace(" over", "");						
		}
		else {
			element.className = element.className.replace(" down", "");
		}	
	}	
	
	//ONLINE LINK
	document.getElementById("onlinelink").onmousedown = function() {
	
		element = document.getElementById("online_reveal")

		if( element.className.search(" down") < 0 ) {
			element.className += " down";
		}
		else if( element.className.search(" over") >= 0 ) {
			element.className = element.className.replace(" over", "");						
		}
		else {
			element.className = element.className.replace(" down", "");
		}	
	}
	
	//ONLINE SERG LINK
	document.getElementById("onlineserglink").onmousedown = function() {
	
		element = document.getElementById("onlineserg_reveal")

		if( element.className.search(" down") < 0 ) {
			element.className += " down";
		}
		else if( element.className.search(" over") >= 0 ) {
			element.className = element.className.replace(" over", "");						
		}
		else {
			element.className = element.className.replace(" down", "");
		}	
	}

	//ONLINE INSP LINK
	document.getElementById("onlineinsplink").onmousedown = function() {
	
		element = document.getElementById("onlineinsp_reveal")

		if( element.className.search(" down") < 0 ) {
			element.className += " down";
		}
		else if( element.className.search(" over") >= 0 ) {
			element.className = element.className.replace(" over", "");						
		}
		else {
			element.className = element.className.replace(" down", "");
		}	
	}
	
	//ONLINE NIE LINK
	document.getElementById("onlinedetlink").onmousedown = function() {
	
		element = document.getElementById("onlinedet_reveal")

		if( element.className.search(" down") < 0 ) {
			element.className += " down";
		}
		else if( element.className.search(" over") >= 0 ) {
			element.className = element.className.replace(" over", "");						
		}
		else {
			element.className = element.className.replace(" down", "");
		}	
	}	
 	
}
window.onload=startList;