if(document.images){
  image1= new Image(); 
  image1.src="images/nav_top.jpg"; 
	
  image2= new Image(); 
  image2.src="images/nav_top_RO.jpg"; 
  
  image3= new Image(); 
  image3.src="images/nav_services.jpg"; 
  
  image4= new Image(); 
  image4.src="images/nav_services_RO.jpg"; 
  
  image5= new Image(); 
  image5.src="images/nav_gallery.jpg"; 
  
  image6= new Image(); 
  image6.src="images/nav_gallery_RO.jpg"; 
  
  image7= new Image(); 
  image7.src="images/nav_bottom.jpg"; 

  image8= new Image(); 
  image8.src="images/nav_bottom_RO.jpg"; 

}
/********************\
 )		subnav		(
\********************/
function toggleOn(id,imageName,image) {	

		var x=document.getElementById(id)
		if (document.getElementById) { // DOM3 = IE5, NS6
			x.style.display = 'block';
		} else {
			if (document.layers) { // Netscape 4
			alertID(id);
				document.id.display = 'block';
			}
			else { // IE 4
				document.all.id.style.display = 'block';
			}
		}
		toggleRO(imageName,image);
	}

function toggleOff(id,imageName,image) {

		var x=document.getElementById(id)
		//safe function to hide an element with a specified id
		if (document.getElementById) { // DOM3 = IE5, NS6
			x.style.display = 'none';
		}
		else {
			if (document.layers) { // Netscape 4
				document.id.display = 'none';
			}
			else { // IE 4
				document.all.id.style.display = 'none';
			}
		}
		toggleRO(imageName,image);
	}

function toggleRO(imageName,image){
		document.images[imageName].src= image;
}
function highlight(lnk, color) {
			var bgColor = color;
			document.getElementById(lnk).style.background = bgColor;
}
function highlightOff(lnk,type) {
	document.getElementById(lnk).style.color='#333333';
	document.getElementById(lnk).style.background='none';
}
/********************\
 )		/subnav		(
\********************/