function checkForm() {
   email = document.getElementById("txt_email").value;
    company = document.getElementById("txt_company").value;
	 address = document.getElementById("txt_addressp").value;
	  telephone = document.getElementById("txt_telephone").value;
	   web = document.getElementById("txt_web").value;
	   
	   var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
	  /* var RegExp /^(([w]+:)?//)?(([dw]| [a-fA-fd]{2 2})+(:([dw]| [a-fA-fd]{2 2})+)?@)?([dw][-dw]{0 253}[dw].)+[w]{2 4}(:[d]+)?(/([-+_~.dw]| [a-fA-fd]{2 2})*)*(?(&?([-+_~.dw]| [a-fA-fd]{2 2}) ?)*)?(#([-+_~.dw]| [a-fA-fd]{2 2})*)?$/;*/


	if(company == "") {
hideAllErrors();
document.getElementById("companyError").style.display = "inline";
document.getElementById("txt_company").select();
document.getElementById("txt_company").focus();
  return false;
  }

  
   else if(address == "") {
hideAllErrors();
document.getElementById("addressError").style.display = "inline";
document.getElementById("txt_addressp").select();
document.getElementById("txt_addressp").focus();
  return false;
  }
 
   else if(telephone == "") {
hideAllErrors();
document.getElementById("telephoneError").style.display = "inline";
document.getElementById("txt_telephone").select();
document.getElementById("txt_telephone").focus();
  return false;
  }
 else if (email == "" || (!reg.test(email))  ) {
	 
	    hideAllErrors();
		document.getElementById("emailError").style.display = "inline";
		document.getElementById("txt_email").select();
		document.getElementById("txt_email").focus();
  		return false;
		 }
    else if(web == ""){
hideAllErrors();
document.getElementById("WebError").style.display = "inline";
document.getElementById("txt_web").select();
document.getElementById("txt_web").focus();
  return false;
  }
  
  else
   return true;
   }
   function hideAllErrors() {

document.getElementById("emailError").style.display = "none"
document.getElementById("companyError").style.display = "none"
document.getElementById("addressError").style.display = "none"
document.getElementById("telephoneError").style.display = "none"
document.getElementById("WebError").style.display = "none"


  }