function DisableFormObjects(fname) {
	var count = document.forms[fname].elements.length;
	for (i=0; i<count; i++) 
	 {
		var element = document.forms[fname].elements[i]; 
		if (element.name!='')
		{
			 if (element.tagName == "INPUT")
			 {
			  
				if (element.type == "text") {
				    if(element.value = null)
						element.disabled = true;
					else
						element.disabled = false;
				}
				
				if (element.type == "checkbox") {
				    if(element.value = null)
						element.disabled = true;
					else
						element.disabled = false;
				}
				
				if (element.type == "radio") {
					if(element.value = null)
						element.disabled = true;
					else
						element.disabled = false;
				}
			 }  
			 
			 if (element.tagName == "SELECT") {
				
				if (element.options[element.selectedIndex].value == '')
					element.disabled = true;
				else
					element.disabled = false;

			 }
			 
			 if (element.tagName == "TEXTAREA") {
				if(element.value = null)
					element.disabled = true;
				else
					element.disabled = false;
			 }
		}
    }
}