function checkform(type,eleme,image){

	elem = document.getElementById(eleme) ;
	img = document.getElementById(image) ;
	var error = '' ;
	var test ='' ;
	switch(type){
		case 'email':
			var emailExp =/^[\w\-\.\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-z0-9]{2,4}$/ ;
			if(elem.value.match(emailExp))
				test ='OK' ;
		break ;
		case 'text' :
			var emailExp ="[a-z0-9]" ;
			if(elem.value.match(emailExp))
				test = 'OK' ;
		break ;
	}
	if(test=='OK'){
		img.src ='pic/accept.png';
	} else {
		img.src ='pic/cancel.png';
		//elem.focus();
		error = 'error' ;
		
	}
	return error ;
	
}
function checkemail(email1,email2,image){
	em1 = document.getElementById(email1) ;
	em2 = document.getElementById(email2) ;
	img = document.getElementById(image) ;
	var error ="error" ;
	
	if(em1.value==em2.value && em2.value!=""){
		img.src ='pic/accept.png';
		error="" ;
		
	}
	return error ;
}