function frmsubmit(fr){
	var count=1;
	var n;
	n=fr.elements.length;
	for(i=1;i<n;i++){
		//if(fr.elements[i].name.'multiselect'+i !=-1){
			if(fr.elements[i].checked==true){
				count = count+1;
			}
		//}
	}
	if(count == 1){
		alert("Please select atleast one record.");
		return false;	
	}
} 


//triming the starting zero in phone numbers
function trim(str)
{
	return str.replace(/^\s+|\s+$/g,'');
}

function checkNumber(textBox)
{
	while (textBox.value.length > 0 && isNaN(textBox.value)) {
		textBox.value = textBox.value.substring(0, textBox.value.length - 1)
	}
	
	textBox.value = trim(textBox.value);
	if (textBox.value.length == 0) {
		textBox.value ='';		
	} else {
		textBox.value = parseInt(textBox.value);
	}
}



function correctPNG() // correctly handle PNG transparency in Win IE 5.5 & 6.
{
   var arVersion = navigator.appVersion.split("MSIE")
   var version = parseFloat(arVersion[1])
   if ((version >= 5.5) && (document.body.filters)) 
   {
      for(var i=0; i<document.images.length; i++)
      {
         var img = document.images[i]
         var imgName = img.src.toUpperCase()
         if (imgName.substring(imgName.length-3, imgName.length) == "PNG")
         {
            var imgID = (img.id) ? "id='" + img.id + "' " : ""
            var imgClass = (img.className) ? "class='" + img.className + "' " : ""
            var imgTitle = (img.title) ? "title='" + img.title + "' " : "title='" + img.alt + "' "
            var imgStyle = "display:inline-block;" + img.style.cssText 
            if (img.align == "left") imgStyle = "float:left;" + imgStyle
            if (img.align == "right") imgStyle = "float:right;" + imgStyle
            if (img.parentElement.href) imgStyle = "cursor:hand;" + imgStyle
            var strNewHTML = "<span " + imgID + imgClass + imgTitle
            + " style=\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";"
            + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
            + "(src=\'" + img.src + "\', sizingMethod='scale');\"></span>" 
            img.outerHTML = strNewHTML
            i = i-1
         }
      }
   }    
}



<!-- FOR SINGLE TIME FORM SUBMIT

var form_submitted = false;

function submit_form ( )
{
  if ( form_submitted )
  {
    alert ( "Form has already been submitted. Please wait..." );
    return false;
  }
  else
  {
    form_submitted = true;
    return true;
  }
}

// -->