function ValidateDataComputerImaging()
{
	
	var contactDate = document.getElementById('contactDate');
	var FirstName = document.getElementById('txtFirstName');
	var LastName = document.getElementById('txtLastName');
	var Phone = document.getElementById('txtPhone');
	var Email = document.getElementById('txtEmail');
	var ddlState = document.getElementById('ddlState');
	var ddlCountry = document.getElementById('ddlCountry');
	var CellPhone = document.getElementById('txtCellPhone');
	var File1 = document.getElementById('fupFile1');
	var File2 = document.getElementById('fupFile2');
	var File3 = document.getElementById('fupFile3');
	var File4 = document.getElementById('fupFile4');

	FirstName.value=trim(FirstName.value);
	LastName.value=trim(LastName.value);
	Email.value=trim(Email.value);
	
	
	if (contactDate.value != "")
	{
		return false;
	}
	

	if (FirstName.value == "")
	{
		alert('Please, enter your first name.');
		FirstName.focus();
		return false;
	}
	else
	{	
		if(!ValidateName(FirstName.value))
		{
			alert("Please check your first name.");
			FirstName.focus();			
			return false;
		}

		if(!ValidateConsonants(FirstName.value))
		{
			alert("Please check your first name.");
			FirstName.focus();
			return false;
		}
	}
	
	if (LastName.value == "")
	{
		alert('Please, enter your last name.');
		LastName.focus();
		return false;
	}
	else
	{
		
		if(!ValidateName(LastName.value))
		{
			alert("Please check your last name.");
			LastName.focus();			
			return false;
		}

		if(!ValidateConsonants(LastName.value))
		{
			alert("Please check your last name.");
			LastName.focus();			
			return false;
		}
	}
	
	
	if (Phone.value == "")
	{
		alert('Please, enter your phone number.');
		Phone.focus();
		return false;
	}
	else
	{
		if(!ValidatePhone(Phone.value))
		{
			alert("Please, enter a valid phone number.");
			Phone.focus();
			return false;
		}
	}
		
	if (Email.value == "")
	{
		alert('Please, enter your email address.');
		Email.focus();
		return false;
	}
	else
	{
		if(!ValidateEmailCharacters(Email.value))
		{
		   	alert("Please check your email address.");
		  	Email.focus();			
		   	return false;
		}
		if(!ValidateEmail(Email.value))
		{
			alert("Please check your email address.");
			Email.focus();		
			return false;
		}
		if(!ValidateEmailDomain(Email.value))
		{
			alert("Please check your email address, domain (.ru, .sk, .ua) isn't valid.");
			Email.focus();			
			return false;
		}

		if(!ValidateConsonants(Email.value))
		{
			alert("Please check your email address.");
			Email.focus();			
			return false;
		}
	}
	
	var valid = false;
	var chkList= document.getElementById('cblProcedures');
	var chkLista= chkList.getElementsByTagName("input");
	
	for(var i=0;i<chkLista.length;i++)
	{  
		if(chkLista[i].checked)
		{
			valid = true;
			break;
		}
	}
	
	if(valid == false)
	{
		alert('Please, please select a procedure.');		
		return false;
	}
	
	var rdo = document.getElementById('optHowWouldYouLikeReply');
	var tag = rdo.getElementsByTagName("input");
	if (!tag[0].checked && !tag[1].checked)
	{
		alert('Please, select how would you like us to reply.');		
		return false;
	}
	
	
	

	var ExtensionAllows=document.getElementById("hddComputerImagingUploadExtension").value.toLowerCase();
	if (File1.value!="" && !ValidFile(File1.value,ExtensionAllows))
	{
		alert('Select a file with these extension: (' + ExtensionAllows + ')');
		File1.focus();
		return false;
	}	
	
	if (File2.value!="" && !ValidFile(File2.value,ExtensionAllows))
	{
		alert('Select a file with these extension: (' + ExtensionAllows + ')');
		File2.focus();
		return false;
	}	
	
	if (File3.value!="" && !ValidFile(File3.value,ExtensionAllows))
	{
		alert('Select a file with these extension: (' + ExtensionAllows + ')');
		File3.focus();
		return false;
	}	
	
	if (File4.value!="" && !ValidFile(File4.value,ExtensionAllows))
	{
		alert('Select a file with these extension: (' + ExtensionAllows + ')');
		File4.focus();
		return false;
	}	
	return true;
}

function ValidFile(value,ExtensionAllows)
{
        
	    var arrExtension=ExtensionAllows.split(",");
	    var IsValid=false;
    	
	    var i=0;
	    for (i=0;i<arrExtension.length;i++) 
	    {
		    var pos=value.toLowerCase().indexOf(arrExtension[i]);
		    if (pos>=0)	{
			    IsValid=true;
			    break;
		    }										
    			
    		
	    }
	    return IsValid;
}



function ValidatePhone(incoming)
{
	var ValidChars = "0123456789.()- ";
	var IsCorrect=true;
	var Char;

	for (cont = 0; cont < incoming.length && IsCorrect == true; cont++) 
	{ 
		Char = incoming.charAt(cont); 
		if (ValidChars.indexOf(Char) == -1) 
			return false;
	}
	return true;
}

function clearText(thefield)
{
	if (thefield.defaultValue == thefield.value) 
		thefield.value = "";
} 

function replaceText(thefield)
{
	if (thefield.value == "") 
		thefield.value = thefield.defaultValue;
}

function trim(myString)
{
 return myString.replace(/^\s+/g,'').replace(/\s+$/g,'')
}



	
function ValidateEmail(valor) 
{    
	var emailPattern = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9-]{2,60}(\.[a-zA-Z]{2,4}){1,2}$/;  
    return emailPattern.test(valor); 
}


function ValidateConsonants(valor) 
{
       valor = valor.toLowerCase();
	if (/[bcdfghjklmnpqrstvwxyz]{7}/.test(valor))
		return false;
	else
		return true;
}  


function ValidateName(valor) 
{
      	valor = valor.toLowerCase();
	if (/^[a-z ]+$/i.test(valor))
		return true;
	else
		return false;
} 

function ValidateEmailCharacters(valor)
{
	valor = valor.toLowerCase();
 	var ValidChars = "abcdefghijklmnopqrstuvwxyz0123456789@.-_";   
 	var Char;
 	var IsCorrect=true;
	
	for (cont = 0; cont < valor.length && IsCorrect == true; cont++) 
 	{ 
	  	Char = valor.charAt(cont); 
  		if (ValidChars.indexOf(Char) == -1) {
			return false;
		}
	}
	return true;
}

function ValidateEmailDomain(valor) 
{
	valor = valor.toLowerCase();
	if (/.ru$|.sk$|.ua$/i.test(valor))
		return false;	
	else
		return true;
}  

function ValidateCityState(valor) 
{
	valor = valor.toLowerCase();
	if (/^[a-z ]+$/i.test(valor))
		return true;
	else
		return false;
}