function checkRadio()
{
	total = 0;
	checkboxlen = 0;
	checkbox = false;
	len = document.form_permission.elements.length
	
	for(i=0;i<len;i++){
		if((document.form_permission.elements[i].type=='radio')){
			checkbox = true;
			checkboxlen = checkboxlen + 1;
			if(document.form_permission.elements[i].checked==true){				
				total = total + 1;				
				return true;
			}			
		}		
	}

	if(total<1){
			alert("Please select atleast one permission level.");
			return false;
	}

}