//set default start tab
var oldTabId = 'p34';

function swapTab(newTab) {
	var oldTab = document.getElementById(oldTabId); 
	var oldDiv;

	//determine the old tab and div
	if (oldTabId == 'p34') {
			oldDiv = 'propFormDiv';
	} else if (oldTabId == 'r') {
			oldDiv = 'propFormDiv';
	} else if (oldTabId == 'b') {
			oldDiv = 'agentFormDiv';
	} else if (oldTabId == 'd') {
			oldDiv = 'devFormDiv';
	}

    //need to display new form/hide old form or change hidden values
    if (newTab.id == 'p34') {
		//var rForm = document.getElementById('Type');
		//rForm.value = 'Residential';
		//hide/display if form not already up
		if (oldDiv != 'propFormDiv') {
			document.getElementById(oldDiv).style.display = 'none';	
			document.getElementById('propFormDiv').style.display = 'block';	
		}
    } else if(newTab.id == 'r') {
		//var rForm = document.getElementById('Type');
		//rForm.value = 'Rental';
		//hide/display if form not already up
		if (oldDiv != 'propFormDiv') {
			document.getElementById(oldDiv).style.display = 'none';	
			document.getElementById('propFormDiv').style.display = 'block';	
		}
    } else if (newTab.id == 'b') {
		document.getElementById(oldDiv).style.display = 'none';
        document.getElementById('agentFormDiv').style.display = 'block';
    } else if (newTab.id == 'd') {
		document.getElementById(oldDiv).style.display = 'none';
        document.getElementById('devFormDiv').style.display = 'block';
    }

	//change appearance of tabs
	if (document.getElementById('d')) {
		// homepage
		oldTab.style.background = "url(../images/home_menu_bg.gif) repeat-x";	
		newTab.style.background = "#EAECEF";
	} else {
		// global/regional pages
		oldTab.className = '';
		newTab.className = 'hl';
	}

	oldTabId  = newTab.id;

}