function doClear(theText) {
     if (theText.value == theText.defaultValue) {
         theText.value = ""
     }
 }
 
 function doUnClear(theText) {
     if (theText.value == "") {
         theText.value = "I'm looking for...."
     }
 }
 
 function validateForm(){
	if(document.buy.sizeColor.selectedIndex==0)	{
		alert("Please choose a size/colour first.");
		document.buy.sizeColor.focus();
		return false;
	}
	return true;
 }