preload (new Array("uslugi","price","work","doc","contact","zakaz","soisk","link"));

function preload(images) 
{
        for (i =0;i<images.length;i++) 
           {
img = images[i];
eval(img+"_on = new Image(100,24);images\n"+img+"_on.src='"+img+"_on.jpg';\n");
eval(img+"_off = new Image(100,24);images\n"+img+"_off.src='"+img+"_off.jpg';\n");
           }
}

function graphON(graphName) 
{
 document.images[graphName].src=eval(graphName + "_on.src");
}

function graphOFF(graphName) 
{
 document.images[graphName].src=eval(graphName + "_off.src");
}