// JavaScript Document
function validate()
{
st=document.contact.email.value;

	if(document.contact.name.value== "" )
	{
	alert("Please enter your name");
	document.contact.name.focus();
	return false;
	}
	
	
	if(document.contact.email.value=="")
	{
	alert("Please enter your Email");
	document.contact.email.focus();
	return false;
	}
	 else
	 {
				
		if(checkEmail(st)!=true)
		{
			alert("Invalid E-Mail  \n"+st);
			document.contact.email.focus();
			return false; 
		 }
	 }
	
	
	if(document.contact.message.value=="")
	{
	alert("Please enter your Comments");
	document.contact.message.focus();
	return false;
	}
}

function checkEmail(str)
	{
		if((str.indexOf("@")==-1))
		{
			fstr="Please Enter @ or .";
			return false;
		}
		else
		{
		if((str.indexOf("@") == 0) )
		{
			fstr="@  Cannot Be first";
			alert(fstr);
			return false;
		}
		if((str.indexOf("@") == (str.length-1)))
		{
			fstr="@ Cannot Be Last";
			return false;
		}

		
		if((str.indexOf("@")+1) == str.indexOf("."))
		{
			fstr="@. IS Invalid Email";
			return false;
		}
		}
		var cp=0;					
		if(cp==2)
		{
			fstr="@ cannnot be repeated";
			return false;
		}
		return true;
	}