function initHighlight() {

    if (!document.getElementsByTagName){ return; }

    var allfields = document.getElementsByTagName("input");



    // loop through all input tags and add events

    for (var i=0; i<allfields.length; i++){

        var field = allfields[i];

        if ((field.getAttribute("type") == "text") || (field.getAttribute("type") == "password") ) {

            field.onfocus = function () {

              this.className = 'highlightActiveField';

          	 	 if(this.value==this.defaultValue) {

          	 	 	 this.value = "";

          	 	 }

            }

            field.onblur = function (){

              this.className = 'highlightInactiveField';

            	if(this.value==="") {

            		this.value = this.defaultValue;

            	}

            }

        }

    }

}



// Nifty function to add onload events without overwriting

// ones already there courtesy of the lovely and talented

// Simon Willison http://simon.incutio.com/

function addLoadEvent(func) {   

    var oldonload = window.onload;

    if (typeof window.onload != 'function'){

        window.onload = func;

    } else {

        window.onload = function(){

        oldonload();

        func();

        }

    }

}



addLoadEvent(initHighlight);

		

		function validEmail(email) {

			invalidChars = " /:,;"

	

			if (email == "") {

				return false

			}

			for (i=0; i<invalidChars.length; i++) {

				badChar = invalidChars.charAt(i)

				if (email.indexOf(badChar,0) > -1) {

					return false

				}

			}

			atPos = email.indexOf("@",1)

			if (atPos == -1) {

				return false

			}

			if (email.indexOf("@",atPos+1) > -1) {

				return false

			}

			periodPos = email.indexOf(".",atPos)

			if (periodPos == -1) {

				return false

			}

			if (periodPos+3 > email.length)	{

				return false

			}

			return true

		}

		

		function submitMail(carForm) {

			if (!validEmail(carForm.email.value)) {

				alert("Please enter a valid email address")

				carForm.email.focus()

				carForm.email.select()

				return false

			}

			return true

		}

		

		function submitIt(carForm) {

			if (!validEmail(carForm.email.value ) || carForm.email.value==carForm.email.defaultValue) {

				alert("Please enter a valid email address")

				carForm.email.focus()

				carForm.email.select()

				return false

			}

			if (carForm.name.value=="" || carForm.name.value==carForm.name.defaultValue){

				alert("Please enter you name")

				return false

			}

			if (carForm.subject.value=="" || carForm.subject.value==carForm.subject.defaultValue){

				alert("Please enter a subject for your message")

				return false

			}

	

			return true

		}