function check_form(){

  
  var f = document.contact;  
  var errortxt = "";

 
	if(f.name.value.replace(/ /g, '')=="Name:")
	{
		document.getElementById("n1").style.display = "block";
		document.getElementById("n1").innerHTML = "Please enter your name"+"<br/>"+errortxt;
		return false;
	}
	  
	  
	  
	if (f.email.value.replace(/ /g, '')=="") 
	{
		document.getElementById("n2").style.display = "block";
		document.getElementById("n2").innerHTML = "Please enter your email"+"<br/>"+errortxt;
		return false;
	}
	if (f.email.value.match(/^([\w\-]+\.?)+\@([\w\-]+\.{1})+(com|net|org|edu|int|mil|gov|biz|info|aero|museum|name|coop|\w{2})$/) == null) 
	
	{ 
		document.getElementById("n2").style.display = "block";
		document.getElementById("n2").innerHTML = "Please check your email"+"<br/>"+errortxt;
		return false;
	}
	
		if ((f.phone.value.replace(/ /g, '')=="") || (f.phone.value=="Telephone:"))
	{
		document.getElementById("n3").style.display = "block";
		document.getElementById("n3").innerHTML = "Please enter your phone number"+"<br/>"+errortxt;
		return false;	
	}
	
	if(f.phone.value.replace(/ /g, '') != "")
	{
			
			if (validtelephone(f.phone)==false)
			
			{ 
				document.getElementById("n3").style.display = "block";
		document.getElementById("n3").innerHTML = "Please enter a valid phone number"+"<br/>"+errortxt;
		return false;
			}
	}
	
	if(f.cap_text.value.replace(/ /g, '')=="")
	{
		{ 
		document.getElementById("n4").style.display = "block";
		document.getElementById("n4").innerHTML = "Please enter the charactors in the image"+"<br/>"+errortxt;
		return false;
		}
	}
	
	else
		document.contact.action = "form_mail.php";


//return true;		
}

function isNumberKey(evt)
{
  var charCode = (evt.which) ? evt.which : event.keyCode
   if (charCode == 46)
  	return charCode;
  if (((charCode >= 33) && (charCode <= 47)) || ((charCode >= 58) && (charCode<=255)))
  {
  		if(evt.which)
		{
			evt.preventDefault();
		}
		else
		{
			evt.returnValue=false;
		}
  }else
  {
		
		return charCode;
  }
  
}

function isNumber(v)
   {
       var i;
       if(v.length==0)
               return false;
       for(i=0;i<v.length;i++)
               if( !(v.charAt(i)>="0" && v.charAt(i)<="9"))
                       return false;
       return true;
   }



function validtelephone(teleno)
{
  

     var cnt=0;
	 
     tname = teleno.value;
     var flag = isNumber(tname);
	 
	
	if (teleno.value.length != 10) 
	{
		return false;
	}

	 
	if (((teleno.value) == "0000000000") || 
	((teleno.value) == "1111111111") || 
	((teleno.value) == "2222222222") || 
	((teleno.value) == "3333333333") || 
	((teleno.value) == "4444444444") || 
	((teleno.value) == "5555555555") || 
	((teleno.value) == "6666666666") || 
	((teleno.value) == "7777777777") || 
	((teleno.value) == "8888888888") || 
	((teleno.value) == "9999999999"))     
	{
		return false;
	}   


    if(flag==true)
    {
        if(tname.length==10)
        {
           for(i=0;i<tname.length;i++)
           {
                  tempno = tname.charAt(i);
                   if(tempno==tname.charAt(i+1))
                   {
                         cnt++;
                         if(cnt>=5)
                         {
                            return false;
                         }
						   
                   }
					 
            }
		 }
	}
	return true;
}	

function cleardiv(entry)
{
	var temp = document.getElementById("n1").style.display;
	if((entry != '') && (document.getElementById("n1").style.display == "block"))
	document.getElementById("n1").style.display = "none";
	
		var temp = document.getElementById("n2").style.display;
	if((entry != '') && (document.getElementById("n2").style.display == "block"))
	document.getElementById("n2").style.display = "none";
	
		var temp = document.getElementById("n3").style.display;
	if((entry != '') && (document.getElementById("n3").style.display == "block"))
	document.getElementById("n3").style.display = "none";
	
			var temp = document.getElementById("n4").style.display;
	if((entry != '') && (document.getElementById("n4").style.display == "block"))
	document.getElementById("n4").style.display = "none";
}