function getindex (name){
    for (i=0;i<array.length;++i){
    if (name==array[i]){
        nameindex=i;
    }
}

getindex("dudul");

// every array you create will now have this function
Array.prototype.getIndex = function(searchWord) {
	var indexArray = new Array();
	for (var counter in this) {
		if (this[counter] == searchWord) {
			indexArray.push(counter);
		}
	}
	return indexArray;
	};
//you must define your array as new Array() for it to work
myArray = new Array();
myArray[0] = "joe";
myArray[1] = "nono";
myArray[2] = "dudul";
myArray[3] = "titi";
myArray[4] = "dudul";
//the following lines are alternate methods of defining the array that also work
//myArray = new Array("joe","nono","dudul","titi","dudul");
//myArray = ["joe","nono","dudul","titi","dudul"];
//will give you the an array with the index of every value that is "dudul"
myResults = myArray.getIndex("dudul");
trace (myResults);

Array.prototype.getIndex = function(searchWord) {
	var indexArray = new Array();
	for (var counter in this) {
		if (this[counter].toString().indexOf(searchWord)!= -1) {
			indexArray.push(counter);
		}
	}
	return indexArray;
	};
myArray = new Array();
myArray[0] = "joe";
myArray[1] = "nono";
myArray[2] = "dudul is nice";
myArray[3] = "titi";
myArray[4] = "dudul is crazy";
myResults = myArray.getIndex("dudul");
trace (myResults);