function doGo(pWhere) { // called by clicking a main menu item
			//go to designated page 
			//alert("In doGo " ); // alert debug
			window.location.href = pWhere;  // go to linked page
		}			


		function doDsply(pID,pClass){ // handle roll- over/out display for main menu
			//alert("In doDsply "); // alert debug
			var mID = document.getElementById(pID);
			mID.className = pClass;
		}

				
		function showPopup(pRef,pWhere,pClass) { // called by clicking a small image
			//alert("In showPopup " ); // alert debug
			imgWindowRef= window.open(pWhere,"imgWindow","scrollbars=yes,width=800,height=750,resizable,menubar=0,left=100");// open popup window with an enlarged image
			classChange(pRef,pClass) // change rollover text to default class
		}			


		function classChange(pElemRef, pClass) { // called by most mouseover/out handlers
			//alert("In classChange");// debug alert
			pElemRef.className=pClass;
		}		

		function closeWin(){ // called by CLOSE button
			//alert("In closeWin");// debug alert
			window.close(); //close popup window
		}

			function processEscKey(pEvnt) { // called by body onkeydowm event handler to process key down
			  	//alert("In processKey, pEvnt = " +pEvnt); // debug alert
				evntRef = (pEvnt) ? pEvnt : ((window.event) ? event : null); // get ref to event object
				//alert("In processKey: evntRef.keyCode = " + evntRef.keyCode); // debug alert
				if (evntRef.keyCode == 27) closeWin();
			}