//for email addresses
var regexp = /^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/;

//illegal characters in fields
var illegalCharStr = '~!@#$%^*()<>{}[]=?/\\\":;';

var illegalCharStrWeb = '~!@#$%^*()<>{}[]=?";';
 	
// Removes all characters which appear in string bag from string s.
function stripCharsInBag (s, bag)
{   var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

//check for illegal characters
function checkIlleg(va)
{
	var stripped = stripCharsInBag (va, illegalCharStr);
	if(va != '' && stripped.length < va.length)
	{
		return false;
	}
	return true;
}

//check illegal characters for url
function checkIllegweb(va)
{
	var stripped = stripCharsInBag (va, illegalCharStrWeb);
	if(va != '' && stripped.length < va.length)
	{
		return false;
	}
	return true;
}

// Contacu Us Validation
function ConValidate()
	{
	if(document.Contact.Company.value=="")
        {
		alert("Company should not be blank");
		document.Contact.Company.focus();
		return false;
        }
	else	
		{
		if(!checkIlleg(document.Contact.Company.value))
			{
			alert("Company - Invalid Characters");
			return false;
			}
		 }
	if(document.Contact.First_Name.value=="")
        {
		alert("First Name should not be blank");
		document.Contact.First_Name.focus();
		return false;
        }
	else	
		{
		if(!checkIlleg(document.Contact.First_Name.value))
			{
			alert("First Name - Invalid Characters");
			return false;
			}
		 }
	if(document.Contact.Last_Name.value=="")
		{
		alert("Last Name should not be blank");
		document.Contact.Last_Name.focus();
		return false;
        }
	else	
		{
		if(!checkIlleg(document.Contact.Last_Name.value))
			{
			alert("Last Name - Invalid Characters");
			return false;
			}
		}
	if (!document.Contact.Country[document.Contact.Country.selectedIndex].value)
		{
		alert("Country should not be blank");
		return false;		
		}					 					 				
	if((document.Contact.ConCC.value) || (document.Contact.ConAC.value) || (document.Contact.ConNo.value))
		{
		if((document.Contact.ConCC.value=="") || (document.Contact.ConAC.value=="") || (document.Contact.ConNo.value==""))
			{
			alert("Please fill all Contact details");
			return false;
			}
		if(isNaN(document.Contact.ConCC.value))
			{
	 		alert("Country Code - Invalid Characters");
		 	document.Contact.ConCC.focus();
	  	 	return false;
			}
		if(isNaN(document.Contact.ConAC.value))
			{
	 	 	alert("Area Code - Invalid Characters");
		 	document.Contact.ConAC.focus();
	  	 	return false;
			}
		if(isNaN(document.Contact.ConNo.value))
			{
	 	 	alert("Contact Number - Invalid Characters");
		 	document.Contact.ConNo.focus();
	  	 	return false;
			}						
        }
	if(document.Contact.email.value=="")
        {
		alert("Email should not be blank");
		document.Contact.email.focus();
		return false;
        }							
	else 
		{
		email = document.Contact.email.value;
		if(email.search(regexp) == -1)
			{
			alert("Email - Invalid Characters");
			return false;
			}
		}						
	return true;
	}


// Feedback Validation
function FedValidate()
	{
	if(document.Contact.Comments.value=="")
        {
		alert("Comments should not be blank");
		document.Contact.Comments.focus();
		return false;
        }
	if(document.Contact.First_Name.value=="")
        {
		alert("First Name should not be blank");
		document.Contact.First_Name.focus();
		return false;
        }
	else	
		{
		if(!checkIlleg(document.Contact.First_Name.value))
			{
			alert("First Name - Invalid Characters");
			return false;
			}
		 }
	if(document.Contact.Last_Name.value=="")
		{
		alert("Last Name should not be blank");
		document.Contact.Last_Name.focus();
		return false;
        }
	else	
		{
		if(!checkIlleg(document.Contact.Last_Name.value))
			{
			alert("Last Name - Invalid Characters");
			return false;
			}
		}
	if (!document.Contact.Country[document.Contact.Country.selectedIndex].value)
		{
		alert("Country should not be blank");
		return false;		
		}					 					 				
	if((document.Contact.ConCC.value) || (document.Contact.ConAC.value) || (document.Contact.ConNo.value))
		{
		if((document.Contact.ConCC.value=="") || (document.Contact.ConAC.value=="") || (document.Contact.ConNo.value==""))
			{
			alert("Please fill all Contact details");
			return false;
			}
		if(isNaN(document.Contact.ConCC.value))
			{
	 		alert("Country Code - Invalid Characters");
		 	document.Contact.ConCC.focus();
	  	 	return false;
			}
		if(isNaN(document.Contact.ConAC.value))
			{
	 	 	alert("Area Code - Invalid Characters");
		 	document.Contact.ConAC.focus();
	  	 	return false;
			}
		if(isNaN(document.Contact.ConNo.value))
			{
	 	 	alert("Contact Number - Invalid Characters");
		 	document.Contact.ConNo.focus();
	  	 	return false;
			}						
        }
	if(document.Contact.email.value=="")
        {
		alert("Email should not be blank");
		document.Contact.email.focus();
		return false;
        }							
	else 
		{
		email = document.Contact.email.value;
		if(email.search(regexp) == -1)
			{
			alert("Email - Invalid Characters");
			return false;
			}
		}						
	return true;
	}