// JavaScript Document
function chkcontactform()
{
		if(document.contactform.name.value.split(" ").join().length == 0)
		   {
		   alert("Please enter name.");
		   document.contactform.name.focus();
		   return false;
		   }

		if(document.contactform.email.value.split(" ").join().length == 0)
		   {
		   alert("Please enter email.");
		   document.contactform.email.focus();
		   return false;
		   }
        else if(!echeck(document.contactform.email.value))
		   {
			alert("Invalid email address.Please enter valid email address.");
			document.contactform.email.focus();
			return false;
		   }

		if(document.contactform.phone.value.split(" ").join().length == 0)
		   {
		   alert("Please enter phone.");
		   document.contactform.phone.focus();
		   return false;
		   }
	   else if(isNaN(document.contactform.phone.value))
	       {
			alert("Phone must be numbers.");
			document.contactform.phone.focus();
			return false;
		   }
		if(document.contactform.enquiry.value.split(" ").join().length == 0)
		   {
		   alert("Please enter enquiry.");
		   document.contactform.enquiry.focus();
		   return false;
		   }
		   
	   return true;	   

}
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){
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    return false
		 }

 		 return true					
	}