function validate()
{ 
     alert("ggg");
	
	var name=document.getElementById("name");
	var email=document.getElementById("email");
	var message=document.getElementById("message");
	var captcha=document.getElementById("captcha");
	var cap=document.getElementById("cap").value;
	if(name.value=="")
		{
			alert("please enter name");
			name.focus();
			return false;
		}
		
		
		if(email.value=="")
		{
			alert("please enter Email");
			email.focus();
			return false;
		}
		
		
		if(email.value!=="")
		{
			var emailExp = /^[\w\-\.\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-z0-9]{2,4}$/;
			if(!email.value.match(emailExp))
			{
				alert("please enter a valid Email Address");
				return false;
			}
		}
		
		if(captcha.value=="")
		{
			alert("please enter security code");
			captcha.focus();
			return false;
		}
		
		if(captcha.value!="")
		{
				
				if(!captcha.value.match(cap))
				{
					alert("Invalid security code.Enter a valid security code");
					return false;
				}
		}
		
		
		if(message.value=="")
		{
			alert("please enter message");
			message.focus();
			return false;
		}
		
		//contact_submit();
		
		return true;
}