var width, length, widthArray, lengthArray, i, j;
var usingInternetExplorer= document.all;         //Sets identifiier for Internet Explorer
var usingNetscape4x = document.layers;         // Sets identifier for Netscape 4.x

function validateSelection(tagName)
{
  if ( usingInternetExplorer ){
       // alert ("one");
    widthArray  = document.all.widthArray;
       // alert ("two");
    lengthArray = document.all.lengthArray;
      //  alert ("three");
  }
  else {
    if ( usingNetscape4x ) {
      widthArray = document.dockWidth;
      lengthArray = document.dockLength;
    }
    else {
      widthArray = document.getElementById("widthArray");
      lengthArray = document.getElementById("lengthArray");
    }
  }


  for ( i = 0; i <= widthArray.length - 1; i++)
    for ( j = 0; j <= lengthArray.length - 1; j++)
      if (widthArray[i].checked == true && lengthArray[j].checked == true){
        width = widthArray[i].value;
        length = lengthArray[j].value;
        switch (tagName) {
           case "poleDock": importXML("http://www.onthewaterdesigns.com/xml/pole.xml"); break;
           case "floatingDock": importXML("http://www.onthewaterdesigns.com/xml/float.xml"); break;
           case "towerDock": importXML("http://www.onthewaterdesigns.com/xml/tower.xml"); break;
        }
      }
}