function validateContactForm(oForm){
	var errdiv = document.getElementById('errdiv');
 	//oForm refers to the form which you want to validate
 	oForm.onsubmit = function(){
 		var regex = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
 		var regex3 = /^([a-zA-Zà-ÿÀ-ß0-9])+$/;
 		if(oForm.elements['inputEmail1'].value.length<1){
 			errdiv.innerHTML = "You can not leave the email field empty";
 			return false;
 		} else if(!regex.test(oForm.elements['inputEmail1'].value)){
 			errdiv.innerHTML = "Invalid email address format";
 			return false;
 		}
 		
 		if(oForm.elements['yourName'].value.length<1){
 			errdiv.innerHTML = "You can not leave the Name field empty";
 			return false;
 		} else if(!regex3.test(oForm.elements['yourName'].value)){
 			errdiv.innerHTML = "The Name field must contain only Letters and Numbers!";
 			return false;
 		} 	
 		
 		if(oForm.elements['inputText'].value.length<1){
 			errdiv.innerHTML = "You can not leave the Messsage field empty!";
 			return false;
 		} else if(!regex3.test(oForm.elements['inputText'].value)){
 			errdiv.innerHTML = "The Message field must contain only Letters and Numbers!";
 			return false;
 		} 		
 		return true;
 	}
 }