var helpwin = null
		function openWindow()	{
				
				//check to see if window already exists
				if (!helpwin || helpwin.closed) {
					//store window object in global variable
					helpwin = window.open("http://www.accessdata.fda.gov/scripts/ora/pcb/help.cfm","helpwin","toolbar=1,location=1,directories=1,status=1,menubar=1,scrollbars=1,resizable=1,copyhistory=0,width=400,height=600");
					helpwin.moveTo(0,0);
					helpwin.focus();
					}
				else	{
					helpwin.moveTo(0,0);
					helpwin.focus();
					}
					return false;
			}
	
		var tutorwin = null;
		function openWindow2()	{
				
				//check to see if window already exists
				if (!tutorwin || tutorwin.closed) {
					//store window object in global variable
					tutorwin = window.open("http://www.accessdata.fda.gov/scripts/ora/pcb/tutorial/tutorial.cfm","tutorwin","toolbar=1,location=1,directories=1,status=1,menubar=1,scrollbars=1,resizable=1,copyhistory=0,width=800,height=600");
					tutorwin.moveTo(0,0);
					tutorwin.focus();
					}
				else	{
					tutorwin.moveTo(0,0);
					tutorwin.focus();
					}
					return false;
			}
			
		var pcbwin = null;
		function openWindow3()	{
				
				//check to see if window already exists
				if (!pcbwin || pcbwin.closed) {
					//store window object in global variable
					pcbwin = window.open("http://www.accessdata.fda.gov/scripts/ora/pcb/pcb.cfm","pcbwin","toolbar=1,location=1,directories=1,status=1,menubar=1,scrollbars=1,resizable=1,copyhistory=0,width=800,height=600");
					pcbwin.moveTo(0,0);
					pcbwin.focus();
					}
				else	{
					pcbwin.moveTo(0,0);
					pcbwin.focus();
					}
					return false;
			}