//numex=/.+\d\d\d\d\d/;

/*function numchk(num)
{
	return numex.test(num);
}*/


function echeck(str) {

		var at="@";
		var dot=".";
		var lat=str.indexOf(at);
		var lstr=str.length;
		var ldot=str.indexOf(dot);
		if (str.indexOf(at)==-1)
		{
		   alert("Invalid E-mail ID");
		   return false;
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr)
		{
		   alert("Invalid E-mail ID");
		   return false;
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr)
		{
		    alert("Invalid E-mail ID");
		    return false;
		}

		 if (str.indexOf(at,(lat+1))!=-1)
		 {
		    alert("Invalid E-mail ID");
		    return false;
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot)
		 {
		    alert("Invalid E-mail ID");
		    return false;
		 }

		 if (str.indexOf(dot,(lat+2))==-1)
		 {
		    alert("Invalid E-mail ID");
		    return false;
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert("Invalid E-mail ID");
		    return false;
		 }

 		 return true;
		
	}



function form_valid(form)
{

	if(form.name.value == "" ) 
	{
		alert('Please enter your name');
		form.name.focus();
		return false;
	}
	
		
	if(form.mmm.value == "" ) 
	{
		alert('Please enter your email address');
		form.mmm.focus();
		return false;
	}
	
	
	if (echeck(form.mmm.value)==false)
	{
		form.mmm.value="";
		form.mmm.focus();
		return false;
		
	}
	
/*	if(form.p.value == "" ) 
	{
		alert('Please enter your Phone number');
		form.p.focus();
		return false;
	}
	
	if(numchk(form.p.value)==false)
	{
		alert('please enter a valid Phone number');
		form.p.value='';
		form.p.focus();
		return false;
	}
*/	
	if(form.s.value == "" ) 
	{
		alert('Please type your message');
		form.s.focus();
		return false;
	}

	
return true;
}


/*function win(int c, int p)
{
	
	window.open("images.php?".c"&"p,"Window1","menubar=no,width=500,height=400,toolbar=no");
}*/