JS Drop Down Menu, GetElementById, & Cross-Browser Issues

[pmpurser]

I have been working for days it seems, trying to resolve many issues with a js drop down menu. I am attempting to place a hyperlinked image into a js drop down menu and have been successful in firefox, but I cannot seem to hyperlink the image in ie, saf, chr, and opera. The website's location is http://crescentcay.com/04_index.html and I'll list the code below. By clicking on 'location' in drop down under the nav bar's 'welcome' a new flash movie is inserted by the getelementbyid function. It seems that the hyperlink is all that changes from browser to browser, and again, this works for me in firefox but not in any other browser. Thanks for your help in advanced.

function mopen(subCat){
window.clearTimeout();
var identifier;
var subCat;
if (subCat = '0'){
identifier = 'sddm';
}
else if (subCat = '1'){
identifier = 'sddm_alt';
}
subCat = typeof(subCat) == "undefined" ? "" : subCat;
var mopen=new Array()
mopen[0]= '<div id="locale"><a href="javascript:menu(6)" target="_top" onClick="javascript:bt_alt_loc(0)" onMouseOver="javascript:bt_alt_loc(0);javascript:mcancelclosetime();" onMouseOut="javascript:bt_alt_loc(1);javascript:mclosetime();"><img src="images/buttons_02_a_up.jpg" alt="Location" name="Home" width="75" height="35" border="0" onload=""></a></div>'
mopen[1]= '<div id="locale"><a href="javascript:menu(6)" target="_top" onClick="javascript:bt_alt_loc(0)" onMouseOver="javascript:bt_alt_loc(0);javascript:mcancelclosetime();" onMouseOut="javascript:bt_alt_loc(1);javascript:mclosetime();"><img src="images/buttons_02_a_up.jpg" alt="Location" name="Home" width="75" height="35" border="0" onload=""></a></div>'
document.getElementById(identifier).innerHTML = mopen[subCat];
}

function bt_alt_loc(bt_lc_a){
var bt_lc_a;
var bt_lc_a_b;
var bt_desc;
if (bt_lc_a = '0'){
bt_lc_a_b = '1';
bt_desc = 'dn';
}
else if (bt_lc_a = '1'){
bt_lc_a_b = '0';
bt_desc = 'up';
}
document.getElementById("locale").innerHTML = '<div id="locale"><a href="javascript:menu(6)" target="_top" onClick="javascript:bt_alt_loc(' + bt_lc_a + ')" onMouseOver="javascript:bt_alt_loc(' + bt_lc_a + ');javascript:mcancelclosetime();" onMouseOut="javascript:bt_alt_loc(' + bt_lc_a_b + ');javascript:mclosetime();"><img src="images/buttons_02_a_' + bt_desc + '.jpg" alt="Location" name="Home" width="75" height="35" border="0" onload=""></a></div>'
}

function mclose(){
document.getElementById("sddm").innerHTML = ''
}

var closetimer = 0;

function mclosetime(){
closetimer = window.setTimeout(mclose, 500);
}

function mcancelclosetime(){
if(closetimer){
window.clearTimeout(closetimer);
closetimer = null;
}
}