//<script language="javascript">
function resizeImage(imgname) 
{ 
if(imgname!=null && imgname!='')
if(document.images)
{
 if(document.images[imgname])
 {
 	//var tutte = document.all.tags("IMG");
 	var tutte = document.getElementsByTagName("IMG");
		
 	for(x=0; x < tutte.length; x++)
 	{
 		if(tutte[x].name == imgname)
 		{
 			var ah=document.images[imgname].height;
 			var aw=document.images[imgname].width;
 			document.images[imgname].height= ah/2;
 			document.images[imgname].width= aw/2;
 			return;
 		}
 	}
 	}
 }
}

function campoVuoto(campo,messaggio)
	{
		if(campo.value.trim() == ''){
			alert(messaggio);
			campo.focus();
			return (0);
		}
	}
	
	//funzione per controllare il valore con una regexp
	function campoRegExp(campo,exp,messaggio)
	{
		var reg = exp
		if(!reg.test(campo.value)){
			alert(messaggio);
			campo.focus();
			return (0);
		}
	}
	
	//funzione per controllare la selezione di una combo box
	function selectVuoto(campo,messaggio)
	{
		if(campo.value == "0"){
			alert(messaggio);
			campo.focus();
			return (0);
		}
	}
	
	//funzione per controllare la lunghezza di una textarea
	function maxChars(ogg,maxchars)
	{
		if (ogg.value.length > maxchars){
		  ogg.value=ogg.value.substr(0,maxchars);
		}
	}
	
	
	//function : format_number()  
	function format_number(p,d) 
	{
	  var r;
	  if(p<0){p=-p;r=format_number2(p,d);r="-"+r;}
	  else   {r=format_number2(p,d);}
	  return r;
	}
	function format_number2(pnumber,decimals) 
	{
	  var strNumber = new String(pnumber);
	  var arrParts = strNumber.split('.');
	  var intWholePart = parseInt(arrParts[0],10);
	  var strResult = '';
	  if (isNaN(intWholePart))
	    intWholePart = '0';
	  if(arrParts.length > 1)
	  {
	    var decDecimalPart = new String(arrParts[1]);
	    var i = 0;
	    var intZeroCount = 0;
	     while ( i < String(arrParts[1]).length )
	     {
	       if( parseInt(String(arrParts[1]).charAt(i),10) == 0 )
	       {
	         intZeroCount += 1;
	         i += 1;
	       }
	       else
	         break;
	    }
	    decDecimalPart = parseInt(decDecimalPart,10)/Math.pow(10,parseInt(decDecimalPart.length-decimals-1)); 
	    Math.round(decDecimalPart); 
	    decDecimalPart = parseInt(decDecimalPart)/10; 
	    decDecimalPart = Math.round(decDecimalPart); 

	    //If the number was rounded up from 9 to 10, and it was for 1 'decimal' 
	    //then we need to add 1 to the 'intWholePart' and set the decDecimalPart to 0. 

	    if(decDecimalPart==Math.pow(10, parseInt(decimals)))
	    { 
	      intWholePart+=1; 
	      decDecimalPart="0"; 
	    } 
	    var stringOfZeros = new String('');
	    i=0;
	    if( decDecimalPart > 0 )
	    {
	      while( i < intZeroCount)
	      {
	        stringOfZeros += '0';
	        i += 1;
	      }
	    }
	    decDecimalPart = String(intWholePart) + "." + stringOfZeros + String(decDecimalPart); 
	    var dot = decDecimalPart.indexOf('.');
	    if(dot == -1)
	    {
	      decDecimalPart += '.'; 
	      dot = decDecimalPart.indexOf('.'); 
	    } 
	    var l=parseInt(dot)+parseInt(decimals); 
	    while(decDecimalPart.length <= l) 
	    {
	      decDecimalPart += '0'; 
	    }
	    strResult = decDecimalPart;
	  }
	  else
	  {
	    var dot; 
	    var decDecimalPart = new String(intWholePart); 

	    decDecimalPart += '.'; 
	    dot = decDecimalPart.indexOf('.'); 
	    var l=parseInt(dot)+parseInt(decimals); 
	    while(decDecimalPart.length <= l) 
	    {
	      decDecimalPart += '0'; 
	    }
	    strResult = decDecimalPart;
	  }
	  return strResult;
	}
	//fine format_number
		
	//trim di stringhe
	function stringTrim() 
	{
		return this.replace(/^\s+/, '').replace(/\s+$/, '');
	}
	
	String.prototype.trim = stringTrim;


//</script>