function switchmap(newsrc,thisListItem,page){
if(page=="world"){
leftNavObj = document.getElementById('leftNav');
listsObject = leftNavObj.getElementsByTagName('a');
for (i=0;i<listsObject.length;i++){
listsObject[i].style.color = "#333333";
listsObject[i].style.background="transparent";
}

document.getElementById('mapImage').setAttribute('src',newsrc); 
document.getElementById(thisListItem).getElementsByTagName('a')[0].style.color="#8c0000"; 
document.getElementById(thisListItem).getElementsByTagName('a')[0].style.background="url(/images/common/indicator.gif) 0px 2px no-repeat";


}
else{
leftNavObj = document.getElementById('tripsList');
listsObject = leftNavObj.getElementsByTagName('h3');
for (i=0;i<listsObject.length;i++){
listsObject[i].style.background="transparent";
}

document.getElementById(thisListItem).style.background="url(/images/common/indicator.gif) 0px 2px no-repeat";


}

document.getElementById('mapImage').setAttribute('src',newsrc); 

}