//commmon scripts cut into external file			



//nav_= new Image(); 
//.src="images/nav_about-on.gif";


var navState = "off"


function	setSection(sectionId)	{
				eval("document.images." + sectionID + ".src = 'images/nav" + sectionID + "-on.gif'");
				}
		
function	swap(imgName)	{
				if (sectionId != imgName){	
					if (navState == "off"){
					eval("document.images." + imgName + ".src = 'images/" + imgName + "-on.gif'");
					navState = "on"
					}
					
					else	{
					eval("document.images." + imgName + ".src = 'images/" + imgName + "-off.gif'");
					navState = "off"
					}
				}
			}	
			
function	portfolio(imgName,num)	{
					eval("document.images." + imgName + ".src = 'images/" + imgName + num + ".jpg'");
					}