function imgOn(imgName){
	if(document.images){											
		document.images[imgName].src = "images/"+ imgName + "bt_on.jpg";		
	}
}

function imgOff(imgName){
     if(document.images){							
          document.images[imgName].src = "images/"+ imgName + "bt_off.jpg";   		
	}
}

function textOn(obj){
    obj.style.color='red';
}

function textOff(obj){
    obj.style.color="blue";
}

function openFormWindow(url){
    window.open(url,"formwindow","toolbar=no, width=650,height=500,status=no, scrollbars=yes,resizing=no,menubar=no,top=120");
}