function validate_contact(){
  
    if (document.fvalidate.name.value.length==0){
       alert("Please enter your name ")
       document.fvalidate.name.focus()
       return false;
    }
	else{
			var s = document.fvalidate.mail.value;
			var filter=/^[A-Za-z][A-Za-z0-9_.]*@[A-Za-z0-9_]+.[A-Za-z0-9_.]+[A-za-z]$/;
			if (!filter.test(s))
			{ 
				alert("Please enter a valid email address") 
				document.fvalidate.mail.value=""
				document.fvalidate.mail.focus()
				return false; 
			}
			else
			{
				if (document.fvalidate.lyrics.value.length==0)
					{
						alert("Please enter any message")
						document.fvalidate.lyrics.focus()
						return false;
					}
				else
				{
					return true
				}
		    }
		}
} 



function validate_warranty(){
  
    if (document.fvalidate.name.value.length==0){
       alert("Please enter your name ")
       document.fvalidate.name.focus()
       return false;
    }
	else
		{
			var s = document.fvalidate.mail.value;
			var filter=/^[A-Za-z][A-Za-z0-9_.]*@[A-Za-z0-9_]+.[A-Za-z0-9_.]+[A-za-z]$/;
			if (!filter.test(s))
			{ 
				alert("Please enter a valid email address") 
				document.fvalidate.mail.value=""
				document.fvalidate.mail.focus()
				return false; 
			}
			else
			{
		       if (document.fvalidate.text.value.length==0){
				alert("Please enter any message")
				document.fvalidate.text.focus()
				return false;
				}
				else{
				 return true;
				}
	}
	}
}