idList = new Array('catalogs',
				   'customer_support',
				   'dealer_support',
				   'faq',
				   'press_release');
selectedItem = "";
function showHide(obj) {
	
	if (obj.id == selectedItem) {
		selectedItem = "";
	}
	else {
		selectedItem = obj.id;
	}
	for (i=0; i<idList.length; i++) {
		
		objArea = document.getElementById("sub_" + idList[i]);
		
		if (idList[i] == selectedItem) {
			//obj.setAttributes("class","highlight"); //for non image buttons
			objArea.style.display = "block";
		}
		else {
			if (idList[i] != obj.id) {
				//obj.setAttribute("class","unhighlight"); //for non image buttons
			}
			objArea.style.display = "none";
		}
	}
}

/*
this is for highlight WITHOUT images example
*/
function highlight_noimage(obj){
	
	obj.setAttribute("class", "highlight");
	obj.setAttribute("className", "highlight");
	
}
/*
this is for un-highlight WITHOUT images example
*/
function unhighlight_noimage(obj){
	
	obj.setAttribute("class", "unhighlight");
	obj.setAttribute("className", "unhighlight");
}

function highlight(obj) {	
	objBtn = document.getElementById("btn_" + obj.id);
	objBtn.src = "images/btn_" + obj.id + "_on.gif";
}


function unhighlight(obj) {
	if (obj.id != selectedItem) {
		objBtn = document.getElementById("btn_" + obj.id);
		objBtn.src = "images/btn_" + obj.id + "_off.gif";
	}
}
function highlight_css(obj){
	objBtn = document.getElementById("btn_" + obj.id);
	objBtn.src = "images/btn_" + obj.id + "_on.gif";
}

function unhighlight_css(obj){
	if (obj.id != selectedItem) {
		objBtn = document.getElementById("btn_" + obj.id);
		objBtn.src = "images/btn_" + obj.id + "_off.gif";
	}
}

function prod_drop (id) {
	if ( document.getElementById(id).style.display == "none" )
		document.getElementById(id).style.display = "block";
	else
		document.getElementById(id).style.display = "none";
}

function IsNumeric(sText)

{
   var ValidChars = "0123456789.";
   var IsNumber=true;
   var Char;

 
   for (i = 0; i < sText.length && IsNumber == true; i++) 
      { 
      Char = sText.charAt(i); 
      if (ValidChars.indexOf(Char) == -1) 
         {
         IsNumber = false;
         }
      }
   return IsNumber;
   
   }