function ds_onsubmit()
{
	if(document.digital_signage_test.text_name.value=='')
	{
		alert('Name should not be Empty');
		document.digital_signage_test.text_name.focus();
		return false;
	}
	if(document.digital_signage_test.text_phone.value=='')
	{
		alert('Enter Your Telephone number');
		document.digital_signage_test.text_phone.focus();
		return false;
	}
	
if(document.digital_signage_test.text_email.value=='')
	{
		alert('Enter Your Email Adresse');
		document.digital_signage_test.text_email.focus();
		return false;
	}
	if(document.digital_signage_test.text_email.value!="")
	{
		var emailid=document.digital_signage_test.text_email.value;
		var at = emailid.indexOf ('@', 0);
		var dot = emailid.indexOf ('.', 0);
		if ((at == -1) ||(dot == -1) || (dot < at)||(emailid.indexOf ('@', at+1) != -1)|| (emailid.charAt(dot+1)=='.') || (emailid.indexOf (' ', 0) != -1) || (emailid.match("^(.+)@(.+)$")==null) || (emailid.match("^(.+)@(.+)$")[1].match(/^\"?[\w-_\.]*\"?$/)==null)  || (emailid.match("^(.+)@(.+)$")[2].match(/^[\w-\.]*\.[A-Za-z]{2,4}$/)==null))
		{
			 alert("Please enter valid Email Adresse");
			 document.digital_signage_test.text_email.focus();
			 return false;
		} 
		else if ((emailid.substring(0,at).length== 0 ) || (emailid.substring(at+1,dot).length == 0)|| (emailid.substring(dot+1,dot+4).length==0))
		{
			 alert("Please enter valid Email Adresse");
			 document.digital_signage_test.text_email.focus();
			 return false;
		}
	}
}