function IsNumeric(sText)  //function check for numeric value
{
   var ValidChars = "0123456789-";
   var IsNumber=true;
   var Char;
   for (i = 0; i < sText.length && IsNumber == true; i++) 
      { 
      Char = sText.charAt(i); 
      if (ValidChars.indexOf(Char) == -1) 
         {
         IsNumber = false;
         }
      }
   return IsNumber;
   
 }


function isEmail(emailStr1)  // function validate email_id
{
	var emailPat=/^(.+)@(.+)$/
	var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
	var validChars="\[^\\s" + specialChars + "\]"
	var quotedUser="(\"[^\"]*\")"
	var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
	var atom=validChars + '+'
	var word="(" + atom + "|" + quotedUser + ")"
	var userPat=new RegExp("^" + word + "(\\." + word + ")*$")
	var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")

	var matchArray=emailStr1.match(emailPat)
	if (matchArray==null) 
	{
		alert("Email address seems incorrect (check @ and .'s)")		
		return false;
	}
	
	var user=matchArray[1]
	var domain=matchArray[2]
	if (user.match(userPat)==null) 
	{
		alert("The E-Mail Id doesn't seem to be valid.")
		return false;
	}

	var IPArray=domain.match(ipDomainPat)
	if (IPArray!=null) 
	{
		 for (var i=1;i<=4;i++) 
		{
			if (IPArray[i]>255) 
			{
				alert("Destination IP address is invalid!")
				return false;
			}
		}	    
		return true;
	}

	var domainArray=domain.match(domainPat)
	if (domainArray==null) 
	{
		alert("The domain name doesn't seem to be valid.")
		return false;
	}

	var atomPat=new RegExp(atom,"g")
	var domArr=domain.match(atomPat)
	var len=domArr.length
	if (domArr[domArr.length-1].length<2 || 
		domArr[domArr.length-1].length>3) 
	{
	   alert("The address must end in a three-letter domain, or two letter country.")
	   return false;
	}

	if (len<2) 
	{
	   var errStr="This address is missing a hostname!"
	   alert(errStr)
	   return false;
	}
	
	return true;
}

function isValidURL(url)   //function validate url
{
    var RegExp = /^(([\w]+:)?\/\/)?(([\d\w]|%[a-fA-f\d]{2,2})+(:([\d\w]|%[a-fA-f\d]{2,2})+)?@)?([\d\w][-\d\w]{0,253}[\d\w]\.)+[\w]{2,4}(:[\d]+)?(\/([-+_~.\d\w]|%[a-fA-f\d]{2,2})*)*(\?(&?([-+_~.\d\w]|%[a-fA-f\d]{2,2})=?)*)?(#([-+_~.\d\w]|%[a-fA-f\d]{2,2})*)?$/;
    if(RegExp.test(url)){
        return true;
    }else{
        return false;
    }
}


function length_limit(len,field) //function trim the length of the field
{
	var field_value=document.getElementById(field).value;
	
	var field_length=field_value.length;
	if (field_length>len)
	{
		var str=field_value.substr(0,len);
		document.getElementById(field).value=str;
	}
}
function ValidText(f) {
!/^[ A-zÇÑQÀÁÈÉÍÌÏÓÒÚÙÜ]*$/i.test(f.value)?f.value = f.value.replace(/[^ A-zÇÑQÀÁÈÉÍÌÏÓÒÚÙÜ]/ig,''):null;
} 

function drupal_validation()
{
	
	var name=document.getElementById('Name').value;
	if(name=="")
	{
		alert("Please enter Name.");
		document.getElementById('Name').focus();
		return false;
	}
	var cname=document.getElementById('companyname').value;
	if(cname=="")
	{
		alert("Please enter Company Name.");
		document.getElementById('companyname').focus();
		return false;
	}
	var position=document.getElementById('position').value;
	if(position=="")
	{
		alert("Please enter Postion.");
		document.getElementById('position').focus();
		return false;
	}
	var address=document.getElementById('BusinessAddress').value;
	if(address=="")
	{
		alert("Please enter Business Address.");
		document.getElementById('BusinessAddress').focus();
		return false;
	}
	var telno=document.getElementById('TelNo').value;
	if(telno=="")
	{
		alert("Please enter Tel No.");
		document.getElementById('TelNo').focus();
		return false;
	}
	if(!IsNumeric(telno) ||
		telno.length>15 ||
		telno.length<8)
	{
		alert("Please enter valid Tel No.");
		document.getElementById('TelNo').focus();
		return false;
	}
	var faxno=document.getElementById('FaxNo').value;
	if(faxno=="")
	{
		alert("Please enter Fax No.");
		document.getElementById('FaxNo').focus();
		return false;
	}
	if(!IsNumeric(faxno) ||
		faxno.length>15 ||
		faxno.length<8)
	{
		alert("Please enter valid Fax No.");
		document.getElementById('FaxNo').focus();
		return false;
	}
	var email=document.getElementById('Email').value;
	if(email=="")
	{
		alert("Please enter Email.");
		document.getElementById('Email').focus();
		return false;
	}
	if(!isEmail(email))
	{
		return false;
	}
	var url=document.getElementById('URL').value;
	if(url=="")
	{
		alert("Please enter URL.");
		document.getElementById('URL').focus();
		return false;
	}
	if(!isValidURL(url))
	{
		alert("Please enter valid URL.");
		document.getElementById('URL').focus();
		return false;
	}

	return true;
	
}

function contact_us_validation()
{
	
	var name=document.getElementById('Name').value;
	if(name=="")
	{
		alert("Please enter Name.");
		document.getElementById('Name').focus();
		return false;
	}
	var cname=document.getElementById('companyname').value;
	if(cname=="")
	{
		alert("Please enter Company Name.");
		document.getElementById('companyname').focus();
		return false;
	}
	var position=document.getElementById('position').value;
	if(position=="")
	{
		alert("Please enter Postion.");
		document.getElementById('position').focus();
		return false;
	}
	var address=document.getElementById('BusinessAddress').value;
	if(address=="")
	{
		alert("Please enter Business Address.");
		document.getElementById('BusinessAddress').focus();
		return false;
	}
	var telno=document.getElementById('TelNo').value;
	if(telno=="")
	{
		alert("Please enter Tel No.");
		document.getElementById('TelNo').focus();
		return false;
	}
	if(!IsNumeric(telno) ||
		telno.length>15 ||
		telno.length<8)
	{
		alert("Please enter valid Tel No.");
		document.getElementById('TelNo').focus();
		return false;
	}
	var faxno=document.getElementById('FaxNo').value;
	if(faxno=="")
	{
		alert("Please enter Fax No.");
		document.getElementById('FaxNo').focus();
		return false;
	}
	if(!IsNumeric(faxno) ||
		faxno.length>15 ||
		faxno.length<8)
	{
		alert("Please enter valid Fax No.");
		document.getElementById('FaxNo').focus();
		return false;
	}
	var email=document.getElementById('Email').value;
	if(email=="")
	{
		alert("Please enter Email.");
		document.getElementById('Email').focus();
		return false;
	}
	if(!isEmail(email))
	{
		document.getElementById('Email').focus();
		return false;
	}
	var url=document.getElementById('URL').value;
	if(url=="")
	{
		alert("Please enter URL.");
		document.getElementById('URL').focus();
		return false;
	}
	if(!isValidURL(url))
	{
		alert("Please enter valid URL.");
		document.getElementById('URL').focus();
		return false;
	}
	
	var check=document.getElementsByName('chkchoice[]');
	var count=0;
	for (var i=0;i< check.length; i++)
	{
	  if(check[i].checked)
	  {
		  count= count +1;
	  }
	}
	if(count==0)
	{
		alert("Please tick atleast one option.");
		document.getElementById('WebDesignAndDevelopment').focus();
		return false;
	}
	var colaborate=document.getElementById('PleaseColaborate').value;
	if(colaborate=="")
	{
		alert("Please colaborate.");
		document.getElementById('PleaseColaborate').focus();
		return false;
	}
	var captcha=document.getElementById('rvcd').value;
	if(captcha=="")
	{
		document.getElementById('rvcd').focus();
		alert("Please enter the string shown in the image.");
		return false;
	}
	return true;
}