function load_navigation(w) {
	
	if(w != 0){
	// switch top menutab image	
	menu_el = eval("document.getElementById('menu" + w + "')");
		switch(w) {
			case 1: menu_el.src = "/images/menu_companyinfo_on.gif"; 					
					document.getElementById('submenu2').style.display="none";
					document.getElementById('submenu1').style.display="block";
					break;
			case 2: menu_el.src = "/images/menu_solutions_on.gif"; 
					document.getElementById('submenu2').style.display="block";
					document.getElementById('submenu1').style.display="none";
					break;			
			case 3: menu_el.src = "/images/menu_contactus_on.gif"; 
					document.getElementById('submenu1').style.display="none";
					document.getElementById('submenu2').style.display="none";
					break;			
			default: break;
		}
	}
	/*	
	if (w == 1){
		
		//submenu_el = eval("document.getElementById('submenu" + w + "')");
		//submenu_el_2 = eval("document.getElementById('submenu" + r + "')");
		//submenu_el.style.display = "block";
		//submenu_el_2.style.display = "none";	
		
		document.getElementById('submenu1').style.display="block";
		document.getElementById('submenu2').style.display="none";
	} else if (w == 2){
		
		//submenu_el = eval("document.getElementById('submenu" + w + "')");
		//submenu_el_2 = eval("document.getElementById('submenu" + r + "')");
		//submenu_el.style.display = "block";
		//submenu_el_2.style.display = "none";
		
		document.getElementById('submenu2').style.display="block";
		document.getElementById('submenu1').style.display="none";
	} else {
		document.getElementById('submenu1').style.display="none";
		document.getElementById('submenu2').style.display="none";	
		}
		*/
	
	}

/* Switches the menutab image to "on" state, and shows the submenu
 * Should be called by an onmouseover in the menutab element
 * @param i: an integer index representing which menu should be switched on
 */

function clear_submenu(){
	document.getElementById('submenu1').style.display="none";
	document.getElementById('submenu2').style.display="none";
	}


function menu_on(k) {     	
	// switch top menutab image
	menu_el = eval("document.getElementById('menu" + k + "')");
	switch(k) {
		case 1: menu_el.src = "/images/menu_companyinfo_on.gif"; break;
		case 2: menu_el.src = "/images/menu_solutions_on.gif"; break;
		case 3: menu_el.src = "/images/menu_contactus_on.gif"; break;
		default: break;
	}
	
	
	var r;
	if (k == 1){
		r = 2;
	} else if (k == 2){
		r=1;
	} else {
		r=3;
		}
		
	//set variables to control current submenu and rollover submenu
	submenu_el = eval("document.getElementById('submenu" + k + "')");
	submenu_el_2 = eval("document.getElementById('submenu" + r + "')");
	
	if (k == 3) { // contact menu has no submenu
		//if user rolls over contact menu, make both submenus hide
		document.getElementById('submenu1').style.display="none";
		document.getElementById('submenu2').style.display="none";		
	} else{
		//show current submenu
		submenu_el.style.display = "block";	
		
		//hide other submenu
		submenu_el_2.style.display = "none";	
		
	} 
	
	
}

/* Switches the menutab image to "off" state, and shows the submenu
 * Should be called by an onmouseout in the menutab element or submenu element
 * @param i: an integer index representing which menu should be switched off
 */
function menu_off(i) {
	
	submenu_el = eval("document.getElementById('submenu" + i + "')");
	submenu_el_3 = eval("document.getElementById('submenu" + sectionNumber + "')");
	
	
	if (i != sectionNumber) {
		// switch menutab image	
		switch(i) {
			case 1: menu_el.src = "/images/menu_companyinfo.gif"; break;
			case 2: menu_el.src = "/images/menu_solutions.gif"; break;
			case 3: menu_el.src = "/images/menu_contactus.gif"; break;
			default: break;
			}	
		
		
		if((sectionNumber == 3) || (sectionNumber == 0)) {		
			document.getElementById('submenu1').style.display="none";
			document.getElementById('submenu2').style.display="none";
		}else{
		// show original submenu and hide rollover submenu
			if (i == 3) { // contact menu has no submenu
				submenu_el_3.style.display = "block";				
			} else { 			
				submenu_el.style.display="none";
				submenu_el_2.style.display="block";
			}//end if(i==3)
			
		}//end if((sectionNumber == 3) || (sectionNumber == 0))
	
	}//end if(i != sectionNumber)
} //end menu_off


/* Preloads menutab "on"-state images
 * Call on <body> onload
 */
function preloadImages() {
	if (document.images) {
	
	    // menu tab on state
		var img1 = new Image();
		img1.src = "/images/menu_companyinfo_on.gif";
		var img2 = new Image();
		img2.src = "/images/menu_solutions_on.gif";
		var img3 = new Image();
		img3.src = "/images/menu_contactus_on.gif";
		
		// submenu on states
		var img4 = new Image();
		img4.src = "/images/submenu_clienttest_on.gif";
		var img5 = new Image();
		img5.src = "/images/submenu_colocation_on.gif";
		var img6 = new Image();
		img6.src = "/images/submenu_disaster_on.gif";
		var img7 = new Image();
		img7.src = "/images/submenu_history_on.gif";
		var img8 = new Image();
		img8.src = "/images/submenu_managedprof_on.gif";
		var img9 = new Image();
		img9.src = "/images/submenu_mission_on.gif";
		var img10 = new Image();
		img10.src = "/images/submenu_network_on.gif";
		var img11 = new Image();
		img11.src = "/images/submenu_news_on.gif";
		var img12 = new Image();
		img12.src = "/images/submenu_press_on.gif";
		var img13 = new Image();
		img13.src = "/images/submenu_security_on.gif";  
		var img14 = new Image();
      img14.src = "/images/btn_oursolutions_on.gif";
	   var img15 = new Image();
	   img15.src = "/images/customer_portal_on.gif";
	}
}

/* Controls onmouseovers and onmouseouts for rollover images
 * All imgs should be named:
 *  'something.gif' for the off state
 *  'something_on.gif' for the on state
 * The elementId should be called 'something'
 * @param s: the elementId of the submenu item
 */
function imgOn(s) {
if (s) {
		submenu_el = eval("document.getElementById('" + s + "')");
      if (submenu_el){
         submenu_el.src = "/images/" + s + "_on.gif";
      }
	}
}

function imgOff(s) {
	if (s != subSectionx) { 
		submenu_el = eval("document.getElementById('" + s + "')");
		if (submenu_el){
		   submenu_el.src = "/images/" + s + ".gif";
		}
	} else {}
}