// JavaScript Document
function IsEmpty(a) {
   if ((a.value.length==0) ||
   (a.value==null)) {
      return true;
   }
   else { return false; }
}	


	
function checkformcontact ( form )
{
	var mesg ="";
	var output ="true";
	
   if(IsEmpty(form.name)) 
   { 
      //alert('Please enter your name') ;
	  mesg += 'Please enter your  name' + '\n\n';
      form.name.focus(); 
	  document.getElementById('name').className = "inputtxterror";
      //return false; 
   } else 	{  document.getElementById('name').className = "inputtxtok";}

   	   	
	   if(IsEmpty(form.email)) 
   { 
	  mesg += 'Please enter your E-mail address' + '\n\n';
      form.email.focus(); 
	  document.getElementById('email').className = "inputtxterror";
      //return false; 
   } else 	{  document.getElementById('email').className = "inputtxtok";}

	   if(IsEmpty(form.subject)) 
   { 
	  mesg += 'Please enter the subject of your e-mail' + '\n\n';
      form.subject.focus(); 
	  document.getElementById('subject').className = "inputtxterror";
      //return false; 
   } else 	{  document.getElementById('subject').className = "inputtxtok";}


if(IsEmpty(form.comments) || (form.comments.length < 100)) 
   { 
	  mesg += 'Please enter your message ' + '\n\n';
      form.comments.focus(); 
	  document.getElementById('comments').className = "inputtxterror";
      //return false; 
   } else 	{  document.getElementById('comments').className = "inputtxtok";}
   	

   
   if (mesg == "") {
	   
	   	if (!ValidateEmail(form.email)) {
		  document.getElementById('email').className = "inputtxterror";
     	 return false; 
		}
			document.getElementById('email').className = "inputtxtok";
	   	   return true;
   } else {
	   alert(mesg);
	   return false;
   }
   

}


function echeck(str) {
/**
 * DHTML email validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)
 */

		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   alert("Please enter a valid  E-mail address")
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Please enter a valid  E-mail address")
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("Please enter a valid  E-mail address")
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Please enter a valid  E-mail address")
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Please enter a valid  E-mail address")
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("Please enter a valid  E-mail address")
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert("Please enter a valid  E-mail address")
		    return false
		 }

 		 return true					
	}

function ValidateEmail(emailID){
	
	if ((emailID.value==null)||(emailID.value=="")){
		alert("Please Enter your Email address")
		emailID.focus()
		return false
	}
	if (echeck(emailID.value)==false){
		emailID.value=""
		emailID.focus()
		return false
	}
	return true
 }


// Radio Button Validation
// copyright Stephen Chapman, 15th Nov 2004,14th Sep 2005
// you may copy this function but please keep the copyright notice with it
function valButton(btn) {
    var cnt = -1;
    for (var i=btn.length-1; i > -1; i--) {
        if (btn[i].checked) {cnt = i; i = -1;}
    }
    if (cnt > -1) return btn[cnt].value;
    else return null;
}