function check(str,tip)
	{
		var ret = true;
		var s = new String( str );
		switch(tip)
		{
			case 'email':
				var pattern = "^(([a-z])|([a-z\\d]+[\\.\\-_]?[a-z\\d]+))@[a-z\\d]+[\\.\\-]?[a-z\\d]+[\\.]?[a-z\\d]+\\.([a-z]{2}|com|net|org|edu|biz)$";
				var reg = new RegExp( pattern , "i" );
				ret =  reg.test( s ) ;
				break;
			case 'literal':
				var pattern = "^[a-z\\s]+$";
				var reg = new RegExp( pattern , "i" );
				ret = reg.test( s ) ;
				break;
			case 'numeric':
				var pattern = "^[\\d]+$";
				var reg = new RegExp( pattern );
				ret = reg.test( s );
				break;
			case '*':
				ret = 1;
				break;
			default:
				ret = (s.length > 0);
		} // end switch
		s = null;
		reg = null;
		pattern = null;
		return ret;
	}
		
function mySubmit()
{
	for (j=0;j<this.elements.length;j++)
	{
		el = this.elements[j];
		req = el.getAttribute('required');
		
		if (null != req){
			r = check( el.value, req );

			if(!r) {
				el.style.backgroundColor ="#FF0000";
				if (typeof(el.select)=="function")
					el.select();
				el.focus();
				return false;
			}	
			else
				el.style.backgroundColor ="#FFFFFF";
		}
	}
	return true;
}

window.onload = function()
{
var formNo = document.forms.length;
for (i=0;i<formNo;i++)
{
	var frm = document.forms[i];
	frm.onsubmit = mySubmit;
}


for( var i in document.links) {
		document.links[i].onfocus = function(){
			this.blur();
			return false;
		}
	}

correctPNG();
	 
return true;
}


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
         }
      }
   }    
}


function mouseIn(item_id)
{
		it = document.getElementById( 'cat_' + item_id );
    it.src = SampleImages[item_id]['over'].src;
}


function mouseOut(item_id)
{
		it = document.getElementById( 'cat_' + item_id );
   	it.src = SampleImages[item_id]['normal'].src;
}