function navSwap(elem){
			var bi = elem.style.backgroundImage;
			if( bi==null || bi=="" || bi.indexOf("nav_back.gif")!=-1){
				elem.style.backgroundImage = "url('images/nav_back_on.gif')";
				
			} else {
				elem.style.backgroundImage = "url('images/nav_back.gif')";
				
			}
			
		}
		
		function show(id){
			var divArr = document.getElementsByTagName('div');
			for(i=0;i<divArr.length;i++){
				if(divArr[i].id.indexOf("tech")!=-1){
					divArr[i].style.display="none";
				}
			}
			document.getElementById("tech" + id).style.display="block";
		
		}
		
		var imgArr = new Array("welcome","solutions","clients","team","contacts");
		
		for(i=0;i<imgArr.length;i++){
			eval("var img" + i  +"= new Image();");
			eval("img" + i + ".src = \"images/new/nav_" + imgArr[i] + "_off.gif\";");
			eval("var img" + i + "_hilite = new Image();");
			eval("img" + i + "_hilite.src = \"images/new/nav_" + imgArr[i] + "_on.gif\";");
		
		}		
		
		function swapImg(imgN,imgH){
			document.images[imgN].src = eval(imgH + ".src");
		}