function formValidate() {
		if (document.getElementById){
		
			if (document.getElementById('validatedform') != null){
				document.getElementById('validatedform').onsubmit = function(){
					vform = document.getElementById('validatedform');
		
					for (i=0; i<document.forms.length; i++){
						if (document.forms[i].id == 'validatedform'){
							vform = document.forms[i];
						}
					}
					if (vform != null){
						for (i=0; i<vform.elements.length; i++){
							e = vform.elements[i];
							ename = e.name;
							if (e.className == 'required' && e.value == ''){
								alert('Please complete the ' + ename + ' field');
								return false;
							}
						}
					}
					return true;
		
				}
			}
		}
	}
	
	
	if (typeof window.onload == 'function'){
		prevFunction = window.onload;
		window.onload = function (){
			prevFunction();
			formValidate();
		}
	}