window.onload=function(){initSubNav();}

		function initSubNav(){
			if(document.getElementById('subnav')){
				
				var sn = document.getElementById('subnav');
				var snitems = sn.getElementsByTagName('li');
				
				for(i=0; i<snitems.length; i++){
					
					var thisitem = snitems[i];
					if(thisitem.className != 'act'){
					thisitem.onmouseover = function(){this.className = 'over';}
					thisitem.onmouseout =  function(){this.className = '';}
					}
				}	
			}
		}
		
		function productTabs(tab){

			//array of all tab ids
			var tabs = new Array('prod_tab_1', 'prod_tab_2');
			
			//array of all tab content ids
			var tab_cont = new Array('prod_content_1', 'prod_content_2');
			
			for(i=0; i<tabs.length; i++){
				
				if(tab != tabs[i]){
					document.getElementById(tab_cont[i]).style.display = 'none';
				}else{
					document.getElementById(tab_cont[i]).style.display = 'block';
				}
			}
			
			
			
		}
		
		function showDef(letter, elem){
			//set this array with all of the letters that are in the nav and have a content div
			var ltrs = new Array('a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z');
			
			for(i=0; i<ltrs.length; i++){
				if(letter != ltrs[i]){
					document.getElementById('def_'+ltrs[i]).style.display='none';
				}else{
					document.getElementById('def_'+ltrs[i]).style.display='block';
				}
			}
		}