function lTrim(str){
	var whitespace = new String(" \t\n\r");
	var s = new String(str);
	if (whitespace.indexOf(s.charAt(0)) != -1) 	{
		var j=0, i = s.length;
		while (j < i && whitespace.indexOf(s.charAt(j)) != -1)		{
			j++;
		}
		s = s.substring(j, i);	
	}	
	return s;
}

function disableField (field) {
  if (document.all || document.getElementById) 
    field.disabled = true;
  else {
    field.oldOnFocus = field.onfocus;
    field.onfocus = skip;
  }
}
function enableField (field) {
  if (document.all || document.getElementById)
    field.disabled = false;
  else {
    field.onfocus = field.oldOnFocus;
  }
}

function hidediv(id) {
	//safe function to hide an element with a specified id
	if (document.getElementById) { // DOM3 = IE5, NS6
		document.getElementById(id).style.display = 'none';
	}
	else {
		if (document.layers) { // Netscape 4
			document.id.display = 'none';
		}
		else { // IE 4
			document.all.id.style.display = 'none';
		}
	}
}

function showdiv(id) {
	//safe function to show an element with a specified id
		  
	if (document.getElementById) { // DOM3 = IE5, NS6
		document.getElementById(id).style.display = 'block';
	}
	else {
		if (document.layers) { // Netscape 4
			document.id.display = 'block';
		}
		else { // IE 4
			document.all.id.style.display = 'block';
		}
	}
}

function getObj(name)
{
  if (document.getElementById)
  {
  	this.obj = document.getElementById(name);
	//this.style = document.getElementById(name).style;
  }
  else if (document.all)
  {
	this.obj = document.all[name];
	//this.style = document.all[name].style;
  }
  else if (document.layers)
  {
   	this.obj = document.layers[name];
   	//this.style = document.layers[name];
  }
  return this.obj;
}


function noCacheInNN(){
	if ('Navigator' == navigator.appName){
		document.forms[0].reset();
	}
}

function preLoadImgs(){
	
}