function txtfldScrollInit(speed,msg) {                                
   tfScMsg = msg;                                                     
   tfScSpeed = speed;                                                                                       
   txtfldScroll();                                                    
}                                                                                                                                           
function txtfldScroll() {                                             
   document.scform.scfld.value = tfScMsg;                             
   tfScMsg = tfScMsg.substring(1,tfScMsg.length) + tfScMsg.charAt(0); 
   txtfldScrollTimer = setTimeout("txtfldScroll()",tfScSpeed);        
} 

function imgSwap(oImg)
{
   var strOver  = "_on"    // image to be used with mouse over
   var strOff = "_off"     // normal image
   var strImg = oImg.src
   if (strImg.indexOf(strOver) != -1) 
      oImg.src = strImg.replace(strOver,strOff)
   else
      oImg.src = strImg.replace(strOff,strOver)
}