function getModel(laform)
{	
laform.modele.selectedIndex=0;
	if(laform.marque.value <= 0)
	{
		
		ClearList(laform.modele, 'Tous modèles');
	}
	else
	{
		LoadModels(laform.marque[laform.marque.selectedIndex].value,laform);
	}
}

function LoadModels(varindex,laform)
{
	
	var nummodel;
	nummodel=0;	
	if (laform.modele.selectedIndex>0)
	{
	nummodel=laform.modele.selectedIndex;
	
	}
	
	if(varindex>=0)
	{
		
		ClearList(laform.modele, "Tous modèles");		
		for (var k=0; k<tabmarque[varindex].length ; k++)
		laform.modele.options[k+1] = new Option(tabmarque[varindex][k], tabmodele[varindex][k], false, false);
			
		
	}
}

function setModele(varForm)
{

	var myindex = varForm.modele.selectedIndex;
	if (varForm.modele.options[myindex].value == "-1")		
		{}
	else
	{		
		var marque = varForm.marque.selectedIndex;	
		marque--;
		myindex--;
		
	}
}


function ClearList(OptionList, TitleName)
{
	OptionList.length = 0;
	OptionList.options[0] = new Option(TitleName, '-1', true, true);
}

function Selectvar(varForm)
{
for (var k=0;k<varForm.marque.length;k++)
{
	
	if (varForm.marque.options[k].value==varForm.IDmarque.value)
	{
		varForm.marque.options[k].selected=true;
	}	
}

	
}
function select_marque(idmarque,varForm){
		for (var k=0;k<varForm.marque.length;k++)
		{
	
						if (varForm.marque.options[k].value==idmarque)
						{
										varForm.marque.options[k].selected=true;
										getModel(varForm)
						}	
		}
}
function select_modele(idmodele,varForm){
		for (var k=0;k<varForm.modele.length;k++)
		{
	
						if (varForm.modele.options[k].value==idmodele)
						{
										varForm.modele.options[k].selected=true;
										varForm.Modelname.value=Marque[varForm.marque.selectedIndex-1][k-1]
										
										
						}	
		}
}