function loadRandomHeaderImage(){
	nr_images = 5;
	document.write("<img src='/fileadmin/template/frontpage_images/agillic_fp_"+parseInt(Math.random()*nr_images)+".jpg' alt=''/>");	
}

function isValidEmail(str) {
	return (str.indexOf(".") > 2) && (str.indexOf("@") > 0);
}

function checkCommonEntries(form){
	if (form.elements.name.value.length <=0){
		form.elements.name.style.borderColor = "red";
		alert('Please enter your name');
		return false;
	}
	if (form.elements.company && form.elements.company.value.length <=0){
		form.elements.company.style.borderColor = "red";
		alert('Please enter the company name');
		return false;
	}

	if (!isValidEmail(form.elements.email.value)){
		form.elements.email.style.borderColor = "red";
		alert('Please enter a valid email address');
		return false;
	}
	if (form.elements.mobile.value.length <=0){
		form.elements.mobile.style.borderColor = "red";
		alert('Please enter a mobile phone number');
		return false;
	}
	return true;
}

function checkAttachmentPresent(form){	
	if (("Select a White Paper Brochure" == form.elements.attachment1.value) || ("Select a case study" == form.elements.attachment1.value) || ("Select a file" == form.elements.attachment1.value)){
		form.elements.attachment1.style.color = "red";
		alert('Please choose a file');
		return false;
	}
	return true;

}