OnLoad & OnChange events no longer working in mscrm 4.0

//Contact Form 
//Event = OnLoad()
 
//  Used to help search the picklist items
Array.prototype.Contains = function(o) 
{
	var iLength = this.length;
	
	for (var i = 0; i < iLength; i++)
	{
		if (o == this[i])
		{
			return true;
		}
	}
	
	return false;
};
 
// This is the main function that will filter the picklists
crmForm.FilterPicklist = function x()
{
	var oPrimaryPicklist = crmForm.all.little_retailvertical;
	var oRealatedPicklist = crmForm.all.little_rtverticalspecificcategory;
	
	if (oPrimaryPicklist.DataValue == null)
	{
		oRealatedPicklist.DataValue = null;
		oRealatedPicklist.ForceSubmit = true;		
		oRealatedPicklist.Disabled = true;	
		
		
		return;
	}
	
	
	var oTempArray = new Array();
	
	var iLength = oRealatedPicklist.originalPicklistOptions.length;
	
	var aCurrentType = new Array();		
	
	
switch (oPrimaryPicklist.DataValue)
{
case "1":
aCurrentType = new Array(1,2,3,4);
break;
case "2":
aCurrentType = new Array(5,6,7,8,9,10);
break;
case "3":
aCurrentType = new Array(11,12,13,14,15,16);
break;
case "4":
aCurrentType = new Array(17,18,19,20);
break;
case "5":
aCurrentType = new Array(21,22,23,24,25,26,27,28);
break;
case "6":
aCurrentType = new Array(29,30,31,32,33);
break;
}
 
	
	for (var i = 0; i < iLength; i++)
	{		
		if (aCurrentType.Contains(oRealatedPicklist.originalPicklistOptions[i].DataValue))
		{
			oTempArray.push(oRealatedPicklist.originalPicklistOptions[i]);
		}
	}
	
	oRealatedPicklist.Options = oTempArray;
	
	if (oTempArray.length > 0)
	{		
		oRealatedPicklist.Disabled = false;		
	}		
	else
	{
		oRealatedPicklist.DataValue = null;
		oRealatedPicklist.ForceSubmit = true;		
		oRealatedPicklist.Disabled = true;
	}	
}
 
var CRM_FORM_TYPE_CREATE = 1;
var CRM_FORM_TYPE_UPDATE = 2;
 
switch (crmForm.FormType)
{	
	case CRM_FORM_TYPE_CREATE://CREATE_FORM - try these and blow away the vars above
	case CRM_FORM_TYPE_UPDATE:	//UPDATE_FORM
		
		var oRealatedPicklist = crmForm.all.little_little_rtverticalspecificcategory;
		
		oRealatedPicklist.originalPicklistOptions = oRealatedPicklist.Options;		
 
		if (crmForm.all.little_retailvertical.DataValue == null)
		{
			oRealatedPicklist.Disabled = true;
		}
		else
		{					
			var iPicklistValue = oRealatedPicklist.DataValue;
			crmForm.FilterPicklist();
			oRealatedPicklist.DataValue = iPicklistValue;					
		}
 
	break;
}
crmForm.all.little_rtcommercialspecific_c.style.visibility = ''hidden'';
crmForm.all.little_rtcommercialspecific_d.style.visibility = ''hidden'';
 
//RETAIL TAB
//Attribute little_retailvertical
//Event = onChange()
 
crmForm.FilterPicklist();
 
//Hides the Commercial Specific attribute if other than Commerical is selected in Retail Vertical
//If Commercial is selected in Retail Vertical the Commercial Specific attribute is visible
 
if(crmForm.all.little_retailvertical.DataValue == ''1'')
{
 crmForm.all.little_rtcommercialspecific_c.style.visibility = '' '';
 crmForm.all.little_rtcommercialspecific_d.style.visibility = '' '';
}
else
{
 crmForm.all.little_rtcommercialspecific_c.style.visibility = ''hidden'';
 crmForm.all.little_rtcommercialspecific_d.style.visibility = ''hidden'';
}

                                  

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